Dear Praful, 300 marks for General Category can get you a Management seat in BDS. In 2019, the qualifying marks for NEET for General Category were 134-701. Which means 701 was the highest NEET score for General Category and 134 was the least. Now to get a seat in MBBS in atleast Government Quota of Private Medical Colleges, you will need a minimum score of 400. If you can afford the Management fees, then 300 will do. But for this, you will have to wait Direct Admission because now even Management Quota seats are being filled through State Counselling.