Dear aspirant

NEET UG is of Only 180 questions, other 20 questions are extra for attempting,there was changes in pattern in NEET 2021 exam. So your paper must be evaluated for first 180 questions which you might have attempted.

So as you told you got 70 marks then according to that

Your right answer would be 50 which lead you ,50×4 = 200 marks.

But on other hand you attempted 130 questions wrong which lead you to -130 marks.

So equation comes like 200-130= 70 marks.

So total right answer of your was 50. And total wrong answer of your was 130.

Hope I may have explained you well enough.

You can use NEET UG college predictor tool for knowing chances of getting MBBS BDS ayush colleges at your expected marks.

https://medicine.careers360.com/neet-college-predictor?utm_source=qna&utm_medium=neet_cp

All the best