To study MBBS abroad, you need to qualify in NEET. That is enough. Now depending on your Category, the cut offs change. For a Candidate belonging to General Category he/she should secured marks among the top 50 percentile of top NEET score. It is 40 percentile for OBC,SC,ST. Now cut offs change every year depending on various factors such as no.of Candidates appearing for the exam, no.of Candidates qualified, top NEET score and difficulty of the exam. MCC releases the cut offs after the exam every year.