How do you make a click detector give you a hat? [closed]

Hellu, I'm trying to make it so that when you click the hat you want. Then you can click it on your head. Like when you click the hat it goes on your head.

I made a script, but it doesn't work. Why?

if ClickDetector then

    debounce = true

function onTouched(hit)
    if (hit.Parent:findFirstChild("Humanoid") ~= nil and debounce == true) then
        debounce = false
        h = Instance.new("Hat")
        p = Instance.new("Part")
        h.Name = "Headphones"
        p.Parent = h
        p.Position = hit.Parent:findFirstChild("Head").Position
        p.Name = "Handle" 
        p.formFactor = 0
        p.Size = Vector3.new(2, 1, 1) 
        p.BottomSurface = 0 
        p.TopSurface = 0 
        p.Locked = true 
        script.Parent.Mesh:clone().Parent = p
        h.Parent = hit.Parent
        h.AttachmentPos = Vector3.new(0, 0.3, 0)
        wait(5)
        debounce = true
    end
end

script.Parent.Touched:connect(onTouched)
end