The amount of the Child Tax Credit has reverted back this year to pre-Covid amounts. The maximum per child is $2,000, and is first applied to Tax Owed, and is only refundable up to $1600.
Here's more details on the What is the Child Tax Credit?
Do you have 2 children? It may be giving you the Other Dependent credit of $500 each instead of the Child Tax Credit. Check which boxes are checked for Dependents near the top of your return.
We have two children and I cannot find near the top where to make any other adjustments. We should qualify for the $4000 but it is only giving me the $1000. So confused about this one!
This amount suggests that it is giving you the credit for other dependents, not the child tax credit. If your children are 16 or younger and have Social Security numbers and not ITINs, then you should be seeing the child tax credit not the other dependent credit.
Unless they are 17 or older or have ITINs, then return to the My Info section and delete them and re-enter them (it helps to write down their SSNs before you do!) Then be sure to read the questions carefully as some have slightly tricky wording that could cause them to be listed as "other" dependents.
Before filing you can preview the 1040 or print the whole return
https://ttlc.intuit.com/community/accessing/help/how-do-i-preview-my-turbotax-online-return-before-filing/00/26160
Which box is checked for Dependents?