Simple Key System

local correctKey = "MySecretKey" -- Change this to your desired key
local scriptToLoad = "print('Key Accepted! Script Executed')" -- Change this to your desired script

local player = game.Players.LocalPlayer
local gui = Instance.new("ScreenGui")
gui.Name = "Key System"
gui.Parent = player.PlayerGui

local frame = Instance.new("Frame")
frame.Size = UDim2.new(0, 200, 0, 100)
frame.Position = UDim2.new(0.5, -100, 0.5, -50)
frame.BackgroundColor3 = Color3.fromRGB(50, 50, 50)
frame.Parent = gui

local textBox = Instance.new("TextBox")
textBox.Size = UDim2.new(0.8, 0, 0.3, 0)
textBox.Position = UDim2.new(0.1, 0, 0.1, 0)
textBox.PlaceholderText = "Key"
textBox.Text = ""
textBox.Parent = frame

local button = Instance.new("TextButton")
button.Size = UDim2.new(0.8, 0, 0.3, 0)
button.Position = UDim2.new(0.1, 0, 0.6, 0)
button.Text = "Enter"
button.Parent = frame

button.MouseButton1Click:Connect(function()
    if textBox.Text == correctKey then
        gui:Destroy()
        loadstring(scriptToLoad)()
    else
        textBox.Text = "Invalid Key"
    end
end)