I need a copy of my 2020 taxes but I lost my password for my email and my phone number how do I get it back so I can prove my idenity

https://ttlc.intuit.com/turbotax-support/en-us/help-article/security-risk/account-recovery-request-turbotax-account/L3GhqZLVE_US_en_US?uid=lweelam4

since you seem to have lost everything needed to attempt a/c recover you can request either a transcript of your return online after registering

https://www.irs.gov/individuals/get-transcript 

or by mail by submitting form 4506-T https://www.irs.gov/pub/irs-pdf/f4506t.pdF

or call 800-908-9946

if you need an actual copy you can send in form 4506. there's a fee of $30

https://www.irs.gov/pub/irs-pdf/f4506.pdf