what are my chances of getting in? class of 2021

Your UC GPA and SAT reading are below the 25th percentile. Any chance you will be retaking the SAT to get your Reading score up?

GPA and test scores of middle 25%-75% students

High School GPA: 4.12 - 4.30
ACT Composite Score:30 - 34
SAT Critical Reading:630 - 750
SAT Mathematics:660 - 780

UCB with current stats looks like a Reach. I would definitely revise your personal statements (essays) to help your chances.