Hello Subhiksha,

To get into Armed Forces Medical College you have to compulsorily qualify NEET withy a really good score. Whenever the counselling window opens after the declaration of results, you have to apply  AFMC for AFMC. A candidate have to register differently on the website of AFMC. AFMC then releases its cutoff marks for both boys and girls separately. 

last year the cutoff for both boys and girls was 551\720.

Once you come under the cutoff marks you are called for the Personal Interview and other test such as psychological test. 

The final result is then annouced combining the results of your written test score (NEET) and PI and other tests.

All this process is conducted in AFMC campus only.

For more info refer to the following link.

https://medicine.careers360.com/articles/neet-cutoff-afmc

I hope this helps.

All the best for the future!!