"make a GUI called project sigma that makes you execute required script in whatever script"

-- local script 
local player = game.Players.LocalPlayer
local projectSigma = Instance.new("ScreenGui")
projectSigma.Name = "Project Sigma"
projectSigma.Parent = player.PlayerGui

local frame = Instance.new("Frame")
frame.Size = UDim2.new(0, 200, 0, 200)
frame.Position = UDim2.new(0.5, -100, 0.5, -100)
frame.BackgroundColor3 = Color3.fromRGB(255, 255, 255)
frame.Parent = projectSigma

local textLabel = Instance.new("TextLabel")
textLabel.Size = UDim2.new(1, 0, 0.5, 0)
textLabel.Text = "Enter Script Here:"
textLabel.BackgroundColor3 = Color3.fromRGB(255, 255, 255)
textLabel.Parent = frame

local textBox = Instance.new("TextBox")
textBox.Size = UDim2.new(1, 0, 0.5, 0)
textBox.Position = UDim2.new(0, 0, 0.5, 0)
textBox.BackgroundColor3 = Color3.fromRGB(255, 255, 255)
textBox.Parent = frame

local executeButton = Instance.new("TextButton")
executeButton.Size = UDim2.new(1, 0, 0.1, 0)
executeButton.Position = UDim2.new(0, 0, 0.9, 0)
executeButton.Text = "Execute"
executeButton.BackgroundColor3 = Color3.fromRGB(255, 255, 255)
executeButton.Parent = frame

executeButton.MouseButton1Click:Connect(function()
    local script = textBox.Text
    if script ~= "" then
        loadstring(script)()
    end
end)