normally the data file .tax20XX on a windows computer is stored in the user\documents\turbotax folder. if they're lost there is no way to recover them because no online copies exist. you can request copies of your 2019 and 2020 returns from the IRS either online or by filing form 4506-T (a transcript) or 4506 (copy of actual return $43 fee for each return)
https://www.irs.gov/individuals/transcript-types-and-ways-to-order-them
https://www.irs.gov/pub/irs-pdf/f4506.pdf
contact support about the replacement of the CDs
5am-5pm Pacific Time (8-8 Eastern) Monday - Friday
https://support.turbotax.intuit.com/contact
800-446-8848
