If I'm taking a drop & giving hsc class improvement in Feb 2020 and neet in 2020 ,while filling neet form what code should I put?Code1 or 2?

Hello there
You should go with code 2 that is the people that have already passed class 12th because all those candidates who are appearing for improvement has already been passed out and they are sitting for the exams in order to improve their result and not to clear any remaining subject.
So, in that case, you should fill code 2 in the NEET paper 2020.
Hope this has answered your query.