so if I did not get any notifications about RC letter, am I gonna be likely rejected?
Are you asking about being a RCS candidate, or getting into Cal in general? The answers to those questions are:
RCS - starting last year, they contacted them earlier than the regular folk. There are a number of threads started by kids who HAVE been selected as candidates this year, so it looks as if the early notifications have gone out. If you haven’t heard anything, RCS is probably off the table for you.
Admission to the school - most admits will be notified at the end of March.