http://www.admission.ucla.edu/Prospect/APCreditLS.htm is UCLA L&S AP credit chart.
Pretty much any AP credit with a score of 3 will give you units toward the 180 quarter units needed to graduate. But only those where a specific course number is listed are counted as equivalent to a UCLA course, and only those where a specific GE requirement is listed can fulfill that GE requirement.
The only ones that really count as equivalent to a UCLA course are the economics ones (score of 4), the English ones (score of 4), calculus AB (score of 5), calculus BC (score of 4), psychology (score of 4), and some foreign languages.
https://www.seasoasa.ucla.edu/curric-17-18/12ap-17.html shows that UCLA engineering AP credit may differ.