To be eligible to appear for NEET UG you must have 10+2 with Biology, Physics, Chemistry and English with at least 50%( in case if you belong to general category), 45% (in case if you belong to OBC category) and 40% (if you belong to SC/ST/PWD) from a recognized board or university.

Now, if you have read all this subject then you are eligible and you will be able to use the code 6.

You can visit the link below for more info:

medicine.careers360.com/articles/neet-qualification-codes

I hope my answer helps. All the very best for your future endeavors!