I passed class 12th with 57% and got 114 marks in NATA. can I get admission in Sir J J College of Architecture, Mumbai?

First of all, congratulations on securing 114 marks in NATA. No, you may not get Sir JJ college. There are a lot of good colleges and here is a link for all approved architecture colleges across India - https://www.coa.gov.in/index1.php?lang=1&level=0&linkid=25&lid=26