Somewhere, an English teacher has just rolled over in their grave.
Anything you want or as much as the game will allow, I would think.
The value should show what you currently have after going into the currency screen of the game. If it is still ??, it's not able to scan read it for some reason. Try cleaning out any old trainer data from the work folders from any previous versions.
Delete trainer and all files in
Learn how to make your own Trainer Cleaner for the above paths Here. Link
Reboot PC to clear excess memory, get a fresh copy of latest trainer and extract it. Run trainer as admin, read the instructions and try again. At times, a new game may be needed to resolve failed options if the data in your save file was altered. Use on a new game and test the option. If it now works, quit to main menu and load your save and try it again. May also need to run the game without the trainer first and play a bit so the save file gets updated to use possible new values.
If versions don't match your looking at 50/50 odds, might, might not.
Please use the update notification system to report a game patch, update or to report that the trainer may not be working with the latest version of the game. If 3 or more reports have been filed, consider BOOSTING the priority of this title for a faster turnaround on the updated trainer.