Filed taxes with Quicken, thinking I had received all documents, but received a new tax document that should have been included. How do I revise my return?

Quicken is not a tax preparation software company so does not provide tax preparation services.

 

Assuming that you used TurboTax to prepare and e-file your 2022 tax return -

 

You will have to wait for the IRS to either Accept or Reject your filed federal tax return.
If the return is rejected you can make the necessary changes and e-file again.
If the return is accepted you will have to amend your original tax return. An amended return, Form 1040-X, can only be printed and mailed to the IRS if the original tax return was not e-filed. The IRS will take up to 16 weeks or longer to process an amended tax return.

Before starting to amend the tax return, wait for the tax refund to be received or the taxes due to be paid and processed by the IRS.

See this TurboTax support FAQ for amending a tax return - https://ttlc.intuit.com/turbotax-support/en-us/help-article/tax-return/amend-change-correct-return-already-filed/L4VjJ9BA2_US_en_US

did you get an e-mail saying your return was accepted? this is standard for all self-prepare return apps.  if not, are you sure you filed?