How to create a coin which gives points to all players but only once?

I am making a treasure hunt game in roblox can someone please write the script. I tried this but each player can infinitely collect the coin. I want it so that one player can collect it only once per game and then it is visible to other players who can also collect it. Please Help me.

Make sure filtering enabled is on then;

Add a remote event into replicated storage

Create the coin, add this script to tell when it is hit.

local players = game:GetService
script.Parent.Touched:Connect(function(hit)
	local player = players:GetPlayerFromCharacter(hit.Parent)
	local event = game.ReplicatedStorage.RemoteEvent --Change to event name
	event:FireClient(player)
end)

Client side: Starter player scripts, starter gui etc

game.ReplicatedStorage.RemoteEvent.OnClientEvent:Connect(function()
	local cash = player.leaderstats.Cash -- Change to cash value location
	cash.Value = cash.Value + 5 --Coins worth
end)