When did you file 2019? Did you efile or mail it? For 2019 returns they didn't start opening the mail until June 2020 that was stacking up. Back in March the IRS closed their processing centers and stopped processing mailed tax returns. See this IRS page for the latest information
https://www.irs.gov/newsroom/irs-operations-during-covid-19-mission-critical-functions-continue
If you efiled....Was your return Accepted? When you efile you get back 2 emails. The first email only confirms the transmission. The second email says if the IRS (or state) Accepted or Rejected your efile.
When you log into your account you should also see the status and if it was Accepted or Rejected, Started, Printed, Ready to Mail, etc. what does it say?
How to access a prior year return
https://ttlc.intuit.com/community/prior-year-return/help/how-do-i-access-my-prior-year-return/01/270...
