You haven't mentioned the Category you belong and the State that you hold the domicile of. With this score even with SC/ST reservation, a seat in MBBS in GMCs difficult. there are 3 Categories in Private Medical Colleges. Category A is the Government Quota Seats. And only candidates of the home State are eligible to apply for these seats. You will need more than 550 here. B Category seats are also called Management Quota Seats and they are filled through State Counselling and here, you will need atleast 450 and above and the remaining seats are filled through direct Admissions by contacting the College directly provided the Candidate has registered for the respective State Counselling and has not been able to secure a seat in the Counselling. Here the fees is usually nothing less than 40 lakhs.  This is where you might have chances. The last Category is NRI seats Category and you cannot apply for that.