Retirement tax questions

Ok, I am a bit confused by now.  I will start collecting SSB in October 2023 after I reach my FRA in September 2023 while continue to work full time at my current job.  Since the deductions on my paycheck remain the same, when I file income tax next year, how will I be taxed? My salary plus the 3 months SSB payment or the SSB is taxed separately?  Thank you.