Are you applying as a Freshman or Transfer?
Are you a California Resident?
Have you completed the FASFA and are you Pell grant eligible?
What is your FASFA EFC? Have you run the Net Price Calculators for the UC’s? What is your college budget?
UC GPA, test scores, SAT subject tests, EC’s and HS course rigor?
https://admission.universityofcalifornia.edu/tuition-financial-aid/how-aid-works.html