If you had it installed on that account at one time, it will still be in your library of games and apps. Just be sure to be signed in on the account that had GTA V installed and have that account set as primary owner of the PS4.
You should be able to download it for free, if your PlayStation Plus membership(to play online) is active.
If you can do that and are interested, shoot me a PM with your screen name and I'll send ta a friend request/