Can someone please make this leaderboard script autosave it self?

Script:

game.Players.PlayerAdded:connect(function(player)
 local folder = Instance.new("Folder",player)
 folder.Name = "leaderstats"
 local currency1 = Instance.new("IntValue",folder)
 currency1.Name = "Cash"
 player.CharacterAdded:connect(function(character)
  character:WaitForChild("Humanoid").Died:connect(function()
  local tag = character.Humanoid:FindFirstChild("creator")
   if tag ~= nil then
    if tag.Value ~= nil then
     currency1.Value = currency1.Value + 10 --This is the reward after the player died.
    end
   end
  end)
 end)
end)

It's basicly an kill script and i don't know how to make it autoave.I even watched tutorials but did not work for me?Can anyone repair my script to autosave the Cash please?