i need a copy of my 2019 taxes

[ee-ea]

See  this FAQ

https://ttlc.intuit.com/community/my-tax-return/help/how-can-i-access-my-return-after-i-ve-e-filed-o...

[rugrat53]

I need a copy of my 2019 taxes in order to file my 2020 taxes

[VolvoGirl]

You need your 2019 AGI to efile 2020. The AGI is on 2019 1040 line 8b. If you filed a Joint return you use the same AGI for each spouse.

How to find the AGI.
https://ttlc.intuit.com/community/agi/help/how-do-i-find-last-year-s-agi/01/25947

If you didn't file 2019 or filed it later in the year or mailed it, then try entering 0 for the AGI. If that doesn't work you will have to print and mail your return.

Or request a transcript from the IRS
https://www.irs.gov/individuals/get-transcript