Congratulations are on your achievements and you are a very competitive applicant. That said, so are many of the applicants that are applying to CS at the UC’s. Just in case you are not aware, the UC’s are permanently test blind so your excellent ACT would not be considered during the application review.
First calculate your 3 UC GPA’s: Unweighted, Capped weighted and Fully weighted
https://rogerhub.com/gpa-calculator-uc/
Familiarize yourself with the 13 areas of the UC application review: How applications are reviewed | UC Admissions
100% guaranteed UC admission is for CA HS students that are in the top 9% of their HS. The UC default campus is UC Merced.
Since CS is impacted and one of the most competitive majors at the UC’s some which have under a 5% acceptance rates, expect the UC’s to be tough admits and highly unpredictable.
For UCB, you can apply to EECS which is a direct admit vs. College of Letters and Sciences which at the moment is Undeclared admission with a secondary competitive admission to declare the CS major. EECS has around a 3% admission rate. UCB is planning to make changes to the College of L&S CS Freshman admission so check back in the fall for updates.
@ucbalumnus some UC weighted GPA data for the different UCB colleges to help gauge your chances.
UCLA had a 5.4% admit rate for CS in 2021 so another Reach school.
The most likely UC’s would be UC Merced, Riverside and Santa Cruz. Likely/Target schools would include UC Davis, Irvine, Santa Barbara. San Diego would be a less likely and the Reach schools would be UCLA and UCB.
Also note that UCI and UCSD admit into the University first then into the major so if applying for CS, select a less competitive alternate major or you could be admitted into Undeclared. Trying to declare CS later maybe difficult to impossible.
UCSB will also consider an alternate major but it cannot be in the College of Engineering. Again, changing majors to CS can be very difficult.
I think any of the UC’s would be lucky to have you as a student but make sure you identify at least very likely/safety schools you are willing to attend no matter what. Plenty of high achieving CA HS students that were waitlisted or denied from the majority of the UC’s this year for CS.
Best of luck.