2 years ago I bought a game for the PS4 and got very far and spent many hours. 1 year ago I stopped gambling but now I want to start again, but I lost the disk. If I buy a new disk now, will I keep my progress then?
Yes, the score will be saved on the profile
Normally, the savegames are stored on the PS4. You can look it up in Settings and "data stored by application" or something like that… Should not be a problem.
But beware, do not accidentally delete!