Hey there!

With 320 marks out of 720, it doesn't fetch you any seat in any government medical colleges across India. May be you get a chance in some of the private medical colleges by paying them huge amount for a seat. 

Obviously, fees would be higher if you take admission via donation in private medical colleges. As per the eligibility criteria for qualifying NEET UG, your score should be at least 360 marks or above out of 720. 

Just qualifying for counseling, you need to score 360 marks or above out of 720. 

I hope you got your answer.

Thanks !