how do i make this do damage?

i need this to do damage thanks

player = game.Players.LocalPlayer

m = player:GetMouse()

Punch = script:WaitForChild("Punch")

tool = script.Parent

tool.Selected:connect(function(m)
	m.Button1Down:connect(function()		
		local animateTrack = player.Character.Humanoid:LoadAnimation(Punch)
		animateTrack:Play()
	end)
end)