How to get a player's leaderstats upon touching a part?

Hi. I'm making an obby game and to do it I need to know how to get a player's leaderstats folder when they touch it. I've tried this but ultimately failed. Help will be greatly appreciated!

It would be nice to have done some research before posting here, but anyways. Here is what to do:

insert a server script into a part

script.Parent.Touched:Connect(function(hit)
     if hit.Parent:FindFirstChild("Humanoid") then.  
            local players = game:GetService("Players")
            local player = players:GetPlayerFromCharacter(hit.Parent)


            player.leaderstats.Cash.Value = player.leaderstats.Cash.Value +10 -- you can change this to whatever, but this would give the player ten cash if they have a value called "cash" in leaderstats
      end
end)
     

Hope this has been fo help, if so, please accept as the answer :)