Equipped GUI Script

local Ui = script:WaitForChild("MainGui") -- Your Gui Name Here

script.Parent.Equipped:Connect(function()
    local ScreenGui = Ui:Clone()
    ScreenGui.Parent = game.Players.LocalPlayer.PlayerGui
end)

script.Parent.Unequipped:Connect(function()
    game.Players.LocalPlayer.PlayerGui:FindFirstChild(Ui.Name):Destroy()
end)