How do I add a sound effect when the button is hovered over?

Heya guys, this is my first question apparently. Well, I'm trying to make a button that makes a sound effect when the mouse is hovering over it. I don't know how to make a script for it so I'll need some help.

The Script I attempted,

script.Parent.MouseButton1Click:Connect(function()
    script.Parent.Parent.Parent.RulesFrameG.Visible = true
    script.Parent.Parent.Visible = false

    -- >>Sound Effect on hover over.

    -- >> Services
    local UserInputService = game:GetService("UserInputService")

    -- >> GUI Elements
    local GRules = script.Parent

    -- >> Player's Mouse
    local mouse = game.Players.LocalPlayer:GetMouse()

    -- >> Sound
    if GRules.MouseEnter = true
        then script.Parent.FindFirstChild:("Sound")
            Sound.Playing = true
        end
end)