Hello.
I made this script, it works.

using System;
using System.Drawing;  
using System.IO;
using System.Windows.Forms;
using fomm.Scripting;
class Script : FalloutNewVegasBaseScript {
    public static bool install;  
    
    // PNH MENU SETTINGS
    public static Form installPNHForm; 
    public static PictureBox backgroundPicture; 
    public static Button okButton;  
    public static Button cancelButton;
        
    // Options buttons  
  
    public static RadioButton ReadiusRadioButton;  
    public static Label vanillaIconsLabel;  
    public static RadioButton Pipboy2005RadioButton;  
    public static Label pnhLabel;  
    
    //Options panel
    public static Panel optionsPanel;
    public static Label optionsLabel;
    
        public static bool IsPluginActive(String pluginName) {          
            string[] loadOrder = GetActivePlugins();  
            for (int i = 0; i < loadOrder.Length; ++i) {  
                if (loadOrder[i].Equals(pluginName, StringComparison.InvariantCultureIgnoreCase)) {
                     return true;  
                        }
            }  
        
            return false;  
        } 
    
    
    public static Image GetImageFromFomod(string filename) {  
        byte[] data = GetFileFromFomod(filename);  
        MemoryStream s = new MemoryStream(data);  
        Image img = Image.FromStream(s);  
        s.Close();  
        
        return img;  
    }  
    public static void CreatePNHForm() {    
                setUpPNHForm();
                setUpPNHBackgroundImage();
                
                setUpPNHHelpertext();
        
        setUpOptions();
        
                setUpButtons();
        AttachHandlers();  
    }

     public static void setUpOptions() {        
        optionsPanel = new Panel();
        optionsPanel.Location = new Point(6, 180);  
        optionsPanel.Size = new Size(267, 50);  
        optionsPanel.BackColor = Color.WhiteSmoke; 
        optionsPanel.BorderStyle = BorderStyle.FixedSingle;  
        backgroundPicture.Controls.Add(optionsPanel);
        
        ReadiusRadioButton = new RadioButton();
        ReadiusRadioButton.Checked = true;  
        ReadiusRadioButton.Location = new Point(15, 15);  
        ReadiusRadioButton.Size = new Size(20, 20);  
        vanillaIconsLabel = new Label();  
        vanillaIconsLabel.Text = "Pipboy Readius";  
        vanillaIconsLabel.Location = new Point(37, 19);  
        vanillaIconsLabel.AutoSize = true;  
        optionsPanel.Controls.Add(ReadiusRadioButton);  
        optionsPanel.Controls.Add(vanillaIconsLabel);
        
        Pipboy2005RadioButton = new RadioButton();  
        Pipboy2005RadioButton.Checked = false;  
        Pipboy2005RadioButton.Location = new Point(168, 16);  
        Pipboy2005RadioButton.Size = new Size(20, 20);  
        pnhLabel = new Label();  
        pnhLabel.Text = "Pipboy2005";  
        pnhLabel.Location = new Point(190, 19);  
        pnhLabel.AutoSize = true;  
        optionsPanel.Controls.Add(Pipboy2005RadioButton);  
        optionsPanel.Controls.Add(pnhLabel);
        
    }

    public static void setUpPNHHelpertext() {
        Panel helperTextPanel = new Panel();
                helperTextPanel.Location = new Point(60, 130);  
        helperTextPanel.Size = new Size(170, 30);  
        helperTextPanel.BackColor = Color.WhiteSmoke; 
        helperTextPanel.BorderStyle = BorderStyle.FixedSingle;  
        backgroundPicture.Controls.Add(helperTextPanel);
                
                Label helperTextLabel = new Label();   
        helperTextLabel.Text = "Readius or Pipboy 2005?";
        helperTextLabel.Location = new Point(22, 5);  
        helperTextLabel.AutoSize = true; 
        helperTextPanel.Controls.Add(helperTextLabel); 
    }
    
    public static void setUpPNHForm() {
        installPNHForm = CreateCustomForm(); 
        
        installPNHForm.FormBorderStyle = FormBorderStyle.Fixed3D;
        installPNHForm.StartPosition = FormStartPosition.CenterScreen;
        installPNHForm.MaximizeBox = false;
        installPNHForm.Size = new System.Drawing.Size(300, 360); 
        installPNHForm.Text = "Readius vs Pipboy 2005";
    }
    
    public static void setUpPNHBackgroundImage() {
        backgroundPicture = new PictureBox();  
        backgroundPicture.Location = new Point(6, 0);  
        backgroundPicture.Size = new Size(292, 327);  
        // load picture file from .fomod and stream into picture box  
        backgroundPicture.Image = GetImageFromFomod("fomod/screenshot.png");  
        // add BackgroundPicture to list of controls  
        installPNHForm.Controls.Add(backgroundPicture);
    }
    
        
    public static void setUpButtons() {
        okButton = new Button();  
        okButton.Text = "Install";  
        okButton.BackColor = Color.Silver;  
        okButton.Location = new Point(144, 286);  
        okButton.Size = new Size(130, 33);  
        // cancel button  
        cancelButton = new Button();  
        cancelButton.Text = "Cancel";  
        cancelButton.BackColor = Color.Silver;  
        cancelButton.Location = new Point(5, 286);  
        cancelButton.Size = new Size(130, 33);  
        backgroundPicture.Controls.Add(okButton);  
        backgroundPicture.Controls.Add(cancelButton);     
    }
    
    
    public static void AttachHandlers() {  
        //Attach a handler that will fire when the apply button is clicked  
        okButton.Click += delegate(object sender, EventArgs args) {  
            install = true;  
            installPNHForm.Close(); 
        };  
        cancelButton.Click += delegate(object sender, EventArgs args) {  
            install = false;  
            installPNHForm.Close();  
        };  
    } 
        public static bool OnActivate() {
                CreatePNHForm();
                installPNHForm.ShowDialog(); 
                                
                if (install) {
                InstallMenu();
                }
                
                return install;
        }
        
        public static int GetPluginIndex(String pluginName)
    {
    string[] loadOrder = GetAllPlugins();
    for (int i = 0; i < loadOrder.Length; ++i)
    {
        if (loadOrder[i].Equals(pluginName, StringComparison.InvariantCultureIgnoreCase))
            return i;
    }
    return -1;
    }
    public static void PlaceAtPlugin(String targetPlugin, String pluginToMove, int offset)
    {
    int targetPluginIndex = GetPluginIndex(targetPlugin);
    int pluginToMoveIndex = GetPluginIndex(pluginToMove);
    if (targetPluginIndex != -1 && pluginToMoveIndex != -1)
    {
        int[] pluginIdxArray = { pluginToMoveIndex };
        SetLoadOrder(pluginIdxArray, targetPluginIndex + offset);
    }
    }
    public static void PlaceAfterPlugin(String targetPlugin, String pluginToMove)
    {
    PlaceAtPlugin(targetPlugin, pluginToMove, 1);
    }
    public static void PlaceBeforePlugin(String targetPlugin, String pluginToMove)
    {
    PlaceAtPlugin(targetPlugin, pluginToMove, 0);
    }
        
        public static void InstallMenu() {
                
                if (ReadiusRadioButton.Checked) {
                        CopyDataFile("Readius_NV.bsa", "Readius_NV.bsa");
                        InstallFileFromFomod("Readius_NV.esp");
                        if (IsPluginActive("WMX-ArenovalisTextures.esp")) 
        {
            PlaceAfterPlugin("WMX-ArenovalisTextures.esp", "Readius_NV.esp");
        }
            if (IsPluginActive("TheUltimateGhostOverhaul.esp")) 
        {
            PlaceAfterPlugin("TheUltimateGhostOverhaul.esp", "Readius_NV.esp");
        }
            SetPluginActivation("Readius_NV.esp", true);
                } else if (Pipboy2005RadioButton.Checked) {
                        CopyDataFile("Pipboy2500.bsa", "Pipboy2500.bsa");
                        InstallFileFromFomod("Pipboy2500.esp");
                        if (IsPluginActive("WMX-ArenovalisTextures.esp")) 
        {
            PlaceAfterPlugin("WMX-ArenovalisTextures.esp", "Pipboy2500.esp");
        }
            if (IsPluginActive("TheUltimateGhostOverhaul.esp")) 
        {
            PlaceAfterPlugin("TheUltimateGhostOverhaul.esp", "Pipboy2500.esp");
        }
            SetPluginActivation("Pipboy2500.esp", true);
                }       
        }
}

How made progress bar when installing files from this script?.
Thanks.