You get a FIDE rating by playing in over the board tournaments that are FIDE rated. This means face to face with your opponent, not online games. During the tournament you have to score something like at least 2 points. Wins are 1 point. Draws are 1/2 point.
Most tournaments in the US are USCF rated (United States Chess Federation). Most tournaments are not FIDE rated, but some are FIDE rated. You can probably find at least a few FIDE rated tournaments a year in California (if not a lot more). It's not that FIDE tournaments are harder or easier, mostly it means your local organization has to find a certified FIDE arbiter.
In any case, membership and tournament entry fees cost money. You'll also have to travel and sometimes stay in a hotel if the tournament lasts multiple days... so if you want to play over the board chess (which is the only way to be FIDE rated) you'll have to get your parents involved. You should start by talking to them.
How do u get a chess fide id in CA San diego? ive been trying to figure this out and please give me a link or tell me specifically