I file joint return for the child tax credit payment we only received 3,000 but I need to enter a amount for my self and wife. I put for me the 3,000 and for the wife 0?

In January you are going to receive a Letter 6419 from the IRS that shows how much -- if any-- advance monthly CTC payments were sent to you.   You (and your spouse) will each get your own letter with the total you each received.   That will have to be entered on your return and then the amount of CTC still owed to you will be reconciled on your 2021 return.

Enter your Advance Child Tax Credit information from IRS Letter 6419 here:

1. Open your return.
2. Click on Federal tab under Tax Home.
3. Click on the Edit/Add button next to Advance payments, Child and Other Dependent Tax Credits (under Your tax breaks).
4. Answer the interview questions.