Leaderboard help . Add points to gui?

I have a script that adds your deaths and kills in a game. How would I make it so that when a players receives points, it adds 1 point to their team leader board (teams = atlas/sentinel). I have the team leaderboard in a gui. That gui has a frame and with textbuttons under them.

print("Leaderboard script loaded")


function onPlayerEntered(newPlayer)


	local stats = Instance.new("IntValue")
	stats.Name = "leaderstats"

	local kills = Instance.new("IntValue")
	kills.Name = "Kills"
	kills.Value = 0

	local deaths = Instance.new("IntValue")
	deaths.Name = "Deaths"
	deaths.Value = 0

	kills.Parent = stats
	deaths.Parent = stats

	local humanoid = newPlayer.Character.Humanoid
	humanoid.Died:connect(function() onHumanoidDied(humanoid, newPlayer) end )

	-- start to listen for new humanoid
	newPlayer.Changed:connect(function(property) onPlayerRespawn(property, newPlayer) end )


	stats.Parent = newPlayer

end

function onHumanoidDied(humanoid, player)
	local stats = player:findFirstChild("leaderstats")
	if stats ~= nil then
		local deaths = stats:findFirstChild("Deaths")
		deaths.Value = deaths.Value + 1
		handleKillCount(humanoid, player)
	end
end

function onPlayerRespawn(property, player)
	-- need to connect to new humanoid
	
	if property == "Character" then
		local humanoid = player.Character.Humanoid
			local p = player
			local h = humanoid
			humanoid.Died:connect(function() onHumanoidDied(h, p) end )
	end
end


function handleKillCount(humanoid, player)
	-- todo, killing self results in negative points.
	
	-- check for kill tag on humanoid - may be more than one - todo: deal with this
	local tag = humanoid:findFirstChild("creator")

	-- find player with name on tag
	if tag ~= nil then
		
		local killer = tag.Value
		if killer.Parent ~= nil then
			
			-- test if killer still in game, 
			local stats = killer:findFirstChild("leaderstats")
			if stats ~= nil then
				local kills = stats:findFirstChild("Kills")
				if killer ~= player then
					kills.Value = kills.Value + 1
					
				else
					kills.Value = kills.Value - 1
					
				end
			end
		end
	end 
	
end

game.Players.ChildAdded:connect(onPlayerEntered)