Unlike PC, where you can install actual script mods (like flying cars or custom lighting), the PS4 ecosystem is locked down. You cannot run executable mods on a standard retail PS4 without jailbreaking it.
feature to sync that modded save to your PS4 via a CD Projekt Red account. Starter Save Packages cyberpunk modded save ps4
To use a modded save, you must "resign" the data to your specific PlayStation Network ID so the console recognizes it as yours. Unlike PC, where you can install actual script