It would be extremely helpful for you to tell us what exactly you're saving and what for. Different saving and loading processes are useful in different situations
Ok so my friend had an idea for like a merit script on his server so if someone does somthing good they get a merit but it sucks if they leave and they go back to 0 so i want the merits to save
i feel like player persistance could handle this somehow
If the value is only used after spawning, you can use default player_persistence hooks to save and load values.