how to make a proper double press/tap script?

local UIS = game:GetService(“UserInputService”)

UIS.InputBegan:Connect(function(key, GameProcessed)
   if GameProcessed then return end  
   if key.KeyCode = Enum.KeyCode.W then
    if key.KeyCode = Enum.KeyCode.W then
      print(“double press”)
    end
  end
end)

how do i make a proper double press script? Maybe I’m not thinking this thoroughly. Pls help me, thanks! (* ^ w ^)