NEET is conducted for 720 marks. To score 715, you should can afford to either skip 1 question for which you do not know the answers or may be are allowed just 1 incorrect answer because every correct answer gets you 4 marks and a wrong answer takes away 1 mark. Now regarding as to how to score almost 98% in NEET, the only mission would be to get all the basics correct, stick to NCERT and practise as many mock tests as you can. With atleast 30-40 weeks away from NEET 2021, you need to practise as many as mock tests as possible.

If you are preparing for NEET, you may as well try our NEET Knockout package: https://learn.careers360.com/knockout-neet-may/ . It has as many as 5000 videos and concept videos and is backed by Artificial Intelligence. There are mock tests and Videos, Study material and you can prepare at your own pace.