As you are in the final year of your BSc Biotechnology, then you can use the code 5 if you have Physics and chemistry along with Biotechnology. If you don't have all the subjects then you have to use code 2 which means that you are a dropper and you will be allowed to give the exam as a dropper. If you have Biotechnology and Physics/Chemistry as elective also it works. But you need to have physics and chemistry in your graduation along with Biology or Biotechnology to use code 5.

To know more about Code5 visit the link below:

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

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