I was unable to file on time due to a death in the family. The Wake

[Mike9241]

so file now. there's no penalty if you don't owe.

[VolvoGirl]

You can still  efile a 2020 return until Oct 15.  If you are getting a refund there is no penalty for filing late.  You have 3 years to file to get a refund.  Just file as normal.