there are so many errors in the key released by NTA for sep jee 2020 did we get bonus marks for that?

Hello Aspirant,
NTA after releasing answer keys given time to challange answer key of any wrong key is provided.Nta will consider all changes in final answer key and of any questions have no correct option or more than 1 correct options  then students are supposed to get bonus marks.you can visit https://www.google.com/amp/s/engineering.careers360.com/articles/jee-main-answer-key to download answer key.
Best on the marks you obtained according to answer key you can known the list of colleges according to ranking on which you havw chances of admission.college predictor tool link is given below.
https ://engineering.careers360.com/jee-main-college-predictor
Hope this answer helpful to you.
Good luck