You will either have to wait for a letter from the IRS requesting Form 8962, which will include the address to mail it to, OR if the IRS accepts the return then you will need to Amend.
See the answer provided here by Tax Expert ColeenD3:
https://ttlc.intuit.com/community/after-you-file/discussion/what-can-i-do-if-i-missed-to-include-my-...
Page 18 of this publication will show you where to mail Form 1040X if you need to amend:
https://www.irs.gov/pub/irs-pdf/i1040x.pdf
The IRS is requesting Form 8962 for 2019
For further assistance, please contact Customer Support.
In this forum, we do not have access to your account information.
https://ttlc.intuit.com/replies/3300041
**Say "Thanks" by clicking the thumb icon in a post
**Mark the post that answers your question by clicking on "Mark as Best Answer"
