Chances of getting into USC?

I want to apply by December 1 for the scholarships, but I’m honestly in panick mode right now.

I got a 28 on my ACT (31 English, 30 science, 26 math, 23 reading) and have a 3.83 gpa unweighted. I’ve been on varsity tennis for 3 years (captain this year), varsity rugby for 2, and am in several clubs (DECA, volunteer club, president of french club). I’m just scared my act score is too low. I can’t seem to get my reading score up (23 all 3 times). I’m considering retaking it at the end of October (last registration date is October 10). I have also signed up to take the SAT in November. I haven’t taken the SAT yet, but I took the PSAT the beginning of junior year and scored an 1150 (really bad, I know; in my defense I didn’t really try).

What are my chances of getting into USC? Is it worth retaking the ACT?