I'm passed my 12th class in 2017 and I'm dropped 2 years and now I'm pursuing my B. Sc. 1st year. So what's the neet code i have to choose?

It will be 05. Code 05 says: The first year of the three years degree course of a recognised University with Physics, Chemistry and Biology/Biotechnology including practical tests in these subjects provided the examination is a University Examination and candidate has passed the earlier qualifying examination with Physics, Chemistry, Biology/ Biotechnology with English at a level not less than a core course.