A lot of people on here will sell you a dream or give you just a bit of the picture of Hollywood Red Carpets and daily celebrity sightings. Just because you don't have a credit score doesn't mean you cannot get a place. Above all else, you will need a plan, a lot of patience and a few satchels of American currency.
But BEWARE!!! L.A. is full IMMACULATE PROPERTIES with bad management/landlords as well as A TON of crappy /houses/areas, and "seemingly" high-end units that are dumps (bad management, rampant petty crimes, NO PARKING, etc.) that you will run into once you live here for a while. Expect to get the runaround, fill out dozens of rental applications, spend a few dollars on gas driving around (DEFINITELY BUY A CAR