In the context of the PS4, a file is the standard format used for installing games, updates, and DLC.
: The in-game economy was rebalanced for faster acquisition of Proud Souls , making it easier to unlock high-tier skills early. Technical Performance on PS4
If you’re looking for a digital copy you already own (e.g., for backup or reinstall), you can download it from your PSN account’s library on your PS4. Let me know what you actually need, and I’ll point you in the right direction.