Why won't my multi-stat leaderboard work right?

Hello! I am trying to make a leaderboard that incorporates Kills/Deaths & Cash

The Cash stat is designed to give players Cash every 5 seconds they are in the server.

After some tweaking, I have my Kills & Deaths working, But Cash does not add anything. I know it is calculating because if I grab coins within the game, They add to the total, It just doesn't add increments.

I am not an expert coder, But I know I have something in the wrong spot.

Please help!

game.Players.PlayerAdded:Connect(function(plr)

	local stats = Instance.new("Folder")
	stats.Name = "leaderstats"
	stats.Parent= plr 
	
	local kills = Instance.new("IntValue")
	kills.Name = "Kills"
	kills.Parent = stats 

	local deaths = Instance.new("IntValue")
	deaths.Name = "Deaths"
	deaths.Parent = stats 

	local score = Instance.new("IntValue") 
	score.Name = "Cash" 
	score.Parent = stats
	score.Value = 1


	plr.CharacterAdded:Connect(function(char)

		local humanoid
		
		repeat 
			humanoid = char:FindFirstChild("Humanoid")
			wait()
		until humanoid
		
		humanoid.Died:Connect(function()

			deaths.Value = deaths.Value + 1
			
			local tag = humanoid:FindFirstChild("creator")
			
			if tag then

				local killer = tag.Value
				
				if killer then
				
					killer.leaderstats.Kills.Value = killer.leaderstats.Kills.Value + 1

		while true do

		wait(5)
		score.Value = score.Value + 5
		end

				end
			end
		end)
	end)
end)