Unfortunately, there’s nothing you can do this year until the IRS either approve your tax return or send you a letter, both of which are obviously delayed due to the coronavirus. For the future, you may want to check the IRS website to see if you are eligible for the identity protection pin opt-in program. If you are assigned a six digit IP pin, and include it with your tax returns in the future, it should speed processing because it pre-clears you for identity theft issues.
https://www.irs.gov/identity-theft-fraud-scams/get-an-identity-protection-pin