You might have more than 1 account. Use this TurboTax account recovery website to get a list of user ID's for an email address run the tool against any email addresses you may have used https://myturbotax.intuit.com/account-recovery
If you need to download your program…..
https://ttlc.intuit.com/questions/1901289-download-your-turbotax-software-purchase
Access your downloads here
https://shop.turbotax.intuit.com/commerce/account/secure/login.jsp?pagecontext=download
If you are an Advantage subscriber sign onto your Advantage account to download
There is not a download code if you purchased the TurboTax software from the TurboTax website - https://turbotax.intuit.com/personal-taxes/cd-download/
You only need to sign onto the TurboTax download website with the User ID used to purchase the software so you can download the installation file - https://shopping.turbotax.intuit.com/unified/downloads?route=myaccounts&cgcview=downloads
When you are installing the software on your computer you will be asked for the license code to complete the installation.
See this TurboTax support FAQ for the license code - https://ttlc.intuit.com/turbotax-support/en-us/help-article/product-system-requirements/find-license-code/L4GHDgGpr_US_en_US?uid=l9bz5kkp