If you have already filed your return, you can review the direct deposit account information you entered by looking on your printed return. This will be found on your Form 1040 under the Refund section (Line 21a).
To download a copy of your 2019 return you already filed, please see this TurboTax FAQ:https://ttlc.intuit.com/community/prior-year-return/help/how-do-i-get-a-copy-of-a-return-i-filed-this-year-in-turbotax-online/00/25932