In some situations, if you file with Turbotax Online one year, and don't use a paid version of Turbotax in the next year, your access to your returns will be cut off unless you pay an extra fee. However, the policy sometimes changes and I don't know the current rules. Turbotax Online also doesn't retain returns indefinitely, only 3-4 years.
You would need to know which accounts you and your spouse used in 2019 (probably different user names and passwords than your joint account in 2020). Sign in, see if the file is available, and what the cost is going to be. Then you can try calling customer support and see if they will give you a break.
https://ttlc.intuit.com/turbotax-support/en-us/help-article/account-management/turbotax-phone-number...
If you used the program installed on your own computer, Turbotax does not retain copies online.
You can get copies or transcripts from the IRS as described, although I think they only go back 6 or 7 years.
