How to stop leaderstat script looping multiple times?

So, I have an obby in my game that at the end gives you ten tokens, which is a leaderstat, but it repeats multiple times when it is touched, ending up giving over 50 points each time. Is there a way to make it only give the tokens once instead of multiple?

function OnTouched(Part)
	local player = game.Players:GetPlayerFromCharacter(Part.Parent)
	if player then
		local leaderstats = player:FindFirstChild("leaderstats")
		if leaderstats then
			leaderstats.Tokens.Value = leaderstats.Tokens.Value + 10
		end
	end
end

script.Parent.Touched:Connect(OnTouched)

I recommend instead of making the player not be able to touch it again (because player wont be able to touch it if they complete obby again) you should instead teleport the player back to the start, I've wrote code for both. just use whichever one fits you best.

One time use:

local playersThatCanTouch = {}
local players = game:GetService("Players")

players.PlayerAdded:Connect(function(player)
	table.insert(playersThatCanTouch, player)
end)

function OnTouched(Part)
	local character = Part.Parent
	local humanoid = character:FindFirstChildOfClass("Humanoid")
	if humanoid then
		local player = players:GetPlayerFromCharacter(character)
		if table.find(playersThatCanTouch, player) then
			table.remove(playersThatCanTouch, table.find(playersThatCanTouch, player))
			local leaderstats = player:FindFirstChild("leaderstats")
			if leaderstats then
				leaderstats.Tokens.Value += 10
			end
		end
	end
end

script.Parent.Touched:Connect(OnTouched)

Teleport:

local players = game:GetService("Players")
local debounce = 0.5
local debounceEnabled = false

function OnTouched(Part)
	local character = Part.Parent
	local humanoid = character:FindFirstChildOfClass("Humanoid")
	if humanoid then
		if debounceEnabled == false then
			debounceEnabled = true
			
			character:MoveTo(Vector3.new(0, 0, 0)) -- put starting point position in here
			
			task.wait(debounce)
			debounceEnabled = false
		end
	end
end

script.Parent.Touched:Connect(OnTouched)