I think you mean that you didn't get a child tax credit, which is normally $2,000 per child. You only get that credit if you have tax listed on line 18 of your return, form 1040. If you don't have anything listed on line 18, you won't see the child tax credit on line 19.
However, you may see an "additional child tax credit" on line 28 if you don't qualify for a child tax credit.
**Say "Thanks" by clicking the thumb icon in a post
**Mark the post that answers your question by clicking on "Mark as Best Answer"