How do I get an enemy to drop exp/gold when killed?

I have an enemy (squirrel) that I want to give exp and gold when killed. This is my leaderboard script:

game.Players.PlayerAdded:connect(function(player)
		local stats = Instance.new('IntValue', player)
	stats.Name = 'leaderstats'

		local level = Instance.new('IntValue', stats)
	level.Name = 'Level'
	level.Value = 1

		local gold = Instance.new('IntValue', stats)
	gold.Name = 'Gold'
	gold.Value = 0

		local experience = Instance.new('IntValue', stats)
	experience.Name = 'Exp'
	experience.Value = 0

end)

I'm kind of new to Lua.