hello,

First of all, that is a very nice thought but let me tell you that NEET is for MBBS /medical courses Which will lead you to become a doctor. So you needn't worry about NEET if You want to become a Scientist.

This profession is more heavily focused on research and development therefore after BiPC in 12th  you can go for BA or BSc in any science discipline. As to become a scientist you will have toget a PhD in pure science disciplines that are either Bio, chem, Physics depending on which stream you are more focused on.

hope this helped. Good luck !!