If you already received the 3rd EIP payment last year then line 30 should be blank.
If you are getting the child tax credit that is on line 28.
PREVIEW 1040
https://ttlc.intuit.com/questions/1901539-how-do-i-preview-my-turbotax-online-return-before-filing
Click on Tax Tools on the left side of the screen. Click on Tools. Click on View Tax Summary. Click on Preview my 1040 on the left side of the screen.
21 days is not a promise----it was only an estimate. Please watch the IRS refund site for information about your refund.
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**