The Amazon purchase should show up on the list of your purchases. How long ago did you purchase the 2021 software from Amazon? There may be delay before it shows up on your Intuit account.
You can also contact TurboTax support for assistance since you do have the license code. They may be able to push the Mac installation file to your account.
Support is open from 5am to 5pm Pacific time, Monday thru Friday
See this TurboTax support FAQ for contacting support - https://ttlc.intuit.com/turbotax-support/en-us/help-article/account-management/turbotax-phone-number...
Support can also be reached by messaging them on these pages https://www.facebook.com/turbotax/ and https://twitter.com/TeamTurboTax
