Photographic memory is closely related to board vision in Chess, where in you instinctively and instantly know something is wrong with the position ( yours or your opponent's) or it clicks to you that you've seen this or a similar position before.
Though memory capacity might seem like an "in-born" talent, I would argue it can be developed to some degree with practice. Play as many professional games as possible. By professional, I mean tournament games with real humans face-to-face. Tournament games build the seriousness that is necessary for forming long term memories. I've seen in my experience that when I am playing a lot of serious chess, I can easily detect board patterns and tricky positions than when I am out of touch with chess.
One more technique to improve board vision and memory is to try NOT to write down the moves while playing but replay the whole game from memory after the game. I've seen that over a period of time, you are better at remembering your own games. Even though you will not be able to remember every game you play, it will improve your memory in general.
Regarding the notations, start speaking in terms of them whenever you describe a game to a friend or whenever you self-analyze a game. It is tricky. Especially the 4th and 5th ranks. I always say
Bg4 from White when its supposed to be
Bg5 and vice versa.
Keep practising and I am sure you will get good at both board vision and notations.
To answer your edited question,
Finally, if you are born with a photographic memory, does that mean it
will help you to WIN in chess?
Winning in chess has to do with many more things than just photographic memory. Tactics, Strategies, Staying calm under time pressure are just a few things that are vital to success but hardly have anything to do with memory. Having a good memory helps in chess but there are still a lot of other aspects to master to become a master!