How can I add a way for players to receive leaderstats currency?

I made a mission gui correlating with 2 bricks. When you touch one brick the mission starts and it says what the mission is on the bottom left of the gui. Once you touch another brick it says [Complete]. The only problem is; I want that once you complete the mission the players awarded with Neutros(the leaderstats name)/ Scripts:

START MISSIONS SCRIPT:

script.Parent.Touched:connect(function(k)
	if k and k.Parent.Humanoid then
		game.Players[k.Parent.Name].Quest.Value = script.quest.Value
		wait(3)
		end
end)

FINISH MISSION SCRIPT:

script.Parent.Touched:connect(function(k)
	if k and k.Parent.Humanoid and game.Players[k.Parent.Name].Quest.Value == "go touch the other brik" then
		game.Players[k.Parent.Name].Quest.Value = "[Completed]"
		wait(1.1)
		end
end)