This is the Eligibility criteria for NEET for 2020:

• Indian Nationals, NRIs, PIOs, OCIs, and Foreign Nationals
• No upper age limit as of now. The Candidate should be at least 17 years by December 31st of 2020
• You should have completed your 10+2 with Physics, Chemistry and Biology as your Core Subjects.
• 50% Aggregate in Physics, Chemistry and Biology for General Category, 45% for PWD and 40% for OBC,SC,ST Candidates.
• NIOS and Private Candidates are also eligible

Which means age, Nationality criteria aside you should have studied Biology as a subject in your 12th. But with MPC, you do not have Biology. You can also study Biology as an additional subject and secure an aggregate of Physics, Chemistry and Biology. It is 50% for General Category, 45% for PWD and 40% for OBC,SC,ST. So your first step will be to study Biology as an additional subject and then appear for NEET. NEET is the entrance examination for admission to Medical, Dental, Ayush and Veterinary courses across India.