How to make player R.A.P leaderstats?

hello i want to know how to add leaderstats that calculates player R.A.P.

Can you tell me way plz?

Here is an example of putting leaderstats in a player

game.Players.PlayerAdded:connect(function(plr) -- When the player joined add the leaderstats.
leaderstats = Instance.new("Folder",plr) -- Make the folder of leaderstats and parent it to the player.
RAP = Instance.new("IntValue",leaderstats) -- Make the RAP and parent it to the leaderstats
end)