Securing a government medical college seat through NEET needs an eligiblity and as per the eligibility if you are a student of final year BSc is eligible to participate in NEET counselling process and admission.

So if you fail in final year BSc exams it doesn't matter and if you secure a seat in a medical college you can take the admission without any problem.the only problem is the certificates you need to present at the time of document verification.if you fail to provide your documents your seat may get cancelled.

You need to collect your all documents from the college if they coperate you can get certificate easily but if not request them. If you are taking admission on the basis of 12th marks then it may create problem in future so try to get certificate from college.

Hope it helps..