What are the chances of UCLA rescinding my admission?

I applied with mostly A’s and a few B’s, but senior year I will have gotten 5 B’s total (1 first semester and 4 second semester) and might be getting a C in another class. I know it says I only have to report 2 C’s or more but does that mean I will definitely still be accepted as long as I have under 2 C’s?

Is this still considered a drop in academic performance, since the grades I applied with were much better than this?

In general, 3.0 unweighted GPA, no more than 2 C’s and no D’s or F’s. A drop in academic performance is subjective, but I suggest you try to end your Senior year on a high note and get that C up to a B at least. If concerned, contact UCLA admissions to confirm.