Hi Aspirant 

If you have completed your higher secondary in 2018 or before and still you are not doing any course then only you can fill your code as 2.

And if your are in any B.sc courses ( three years’ degree course)  then your code is 5. To get more insight you can visit:

https://medicine.careers360.com/articles/neet-eligibility-criteria

Good luck

Dear Parmeshwar, if your highest qualification has remained +2 all these years, then your qualification code is 02. But if you have joined B.Sc, you should have atleast 2 subjects among Physics, Chemistry, Biology/Biotechnology. If then your code is 05. But if you dont have these subjects then your highest qualification will remain +2. But if you completed B.Sc with any 2 subjects between Physics, Chemistry, Biology/Biotechnology, then your qualification code is 06.