What do you mean "expenses"?
Personal living expenses are not deductible and do not go on a tax return.
The child and dependent care credit is for when you pay someone to take care of your child so you can work. Childcare is the only expense you enter there. You need the Social Security number or Tax ID of the childcare provider.
One of the most common mistakes that messes up the childcare credit for people is listing all of the earned income under only one name on a joint return. Make very sure that your incomes are listed under each of your names. It’s pretty easy to check. Go to the Income section, and click “update” on Wages and Salary. That will take you to the W-2 Summary. Do you see income listed under both of your names?
A few other things—the childcare credit is not a refund. It can reduce your taxes owed. If you were self-employed, but showed a loss, you will not receive the credit.
The person receiving the care had to be 12 or under or qualified as mentally or physically disabled. To claim the childcare credit you need to be filing as Head of Household or Married Filing Jointly. (NOT married filing separately)
If your child was born in 2020 make sure you say the child lived with you all year. The credit is a percentage of your expenses based on your AGI (the higher the income, the lower the percentage) You must provide the Social Security number for each child you are claiming, and the Social Security number or Tax ID for each care provider. You can claim a maximum of $6000 in expenses for 2 or more dependents.
In the case of divorced or never-married parents—only the custodial parent can use the childcare credit.
You can see the amount of the childcare credit on your Form 1040
Child and Dependent Care Credit line 12 (comes from Schedule 3 Form 2441)