You haven't mentioned your Nationality. Irrespective of your Nationality, Indian Citizens, NRIs, PIOs, OCIs and Foreign Nationals can appear for NEET 2020 provided they meet the following eligibility criteria:

NEET 2020 ELIGIBILITY CRITERIA:

• 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