You haven't mentioned your Category. RG KAR is a Private Medical College. And 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. B Category seats are also called Management Quota Seats and they are filled through State Counselling 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. The last Category is NRI seats Category and you cannot apply for that.Nevertheless, in 2019, under State Quota, the cut offs for various Categories for Government Quota seats have been as follows:

General Category: 574

SC: 462

ST: 249

OBC:566

PWD: 541

Now this is 2019 data and cut offs change every year. 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. So for 2020, you should score more than 50 marks against those mentioned agaist your Category here.  And if you are preparing for NEET, you may as well try our NEET Knockout package: https://learn.careers360.com/knockout-neet-may/ . And because you have 34 more days to prepare for NEET, you may as well use this opportunity.