HELLO YASHASHWI,

SINCE YOU'VE NOT MENTIONED YOUR DESIRED BRANCH AND YOUR CATEGORY I'LL ASSUME YOU BELONG TO THE GENERAL CATEGORY. NOW CUTOFF MARKS DEPEND'S UPON VARIOUS FACTORS SUCH AS NUMBER OF STUDENTS APPEARING FOR  THE EXAM, NUMBER OF  SEATS AND DIFFICULTY LEVEL OF  THE EXAM. ALSO CUTOFF IS DIFFERENT FOR DIFFERENT BRANCHES. BUT MINIMUM MARKS TO GET INTO IIT BOMBAY WAS 122 IN JEE ADVANCED WITH A CLOSING RANK OF 12216 IN THE YEAR 2020.

I HOPE I HELPED YOU WITH MY ANSWER. WISHING YOU BEST OF LUCK.