I haven’t received all of my taxes. I received a lettter in the mail advising that I might have forgot to include the medical form and if I didn’t reply in 20 days they would deduct the amou

your message was cut off.   so I'm guessing. were you covered by Obamacare insurance obtained from the Marketplace?  if so, then the IRS is looking for form 8962 and form 1095A.  if not, then reply you weren't covered by marketplace insurance.