Hello Akanksha
If you are seeking admission in MBBS course, it would be difficult to provide you the exact marks required as the cutoff vary every year from college to college and depends on various factors like the difficulty level of the exam, number of candidates apearing in the exam, category of candidate, etc.
However, you should aim to score 500+ marks in the NEET UG exam for admission to government medical colleges.
Good Luck!