So i did this

function Enter()
	script.Parent:TweenSize(UDim2.new(0, 210, 0, 50))
end

function Leave()
	script.Parent:TweenSize(UDim2.new(0, 200, 0, 50))
end

script.Parent.MouseEnter:Connect(Enter)

script.Parent.MouseLeave:Connect(Leave)

But it is going slow sometimes it says at Enter ? Can u make it faster or what do i need to do?