I'm trying to add how much I paid for daycare last year but it not letting me add the amount I'm not sure why im doing my taxes on online

We cannot see what you have entered so far, but quite often when we hear this problem it is because you have not entered your W-2 or self-employment income yet.   Your income from working has to be entered before you try to work on the childcare credit.

Did you enter your income?

You must enter your income (and the income of your spouse) for the child care expense screens to populate. 

You may be eligible to claim the Child and Dependent Care Credit if:

• You paid expenses for the care of a qualifying individual to enable you (and your spouse, if filing a joint return) to work or actively look for work.
• You (or your spouse if filing a joint return) lived in the United States for more than half of the year. However, special rules apply to military personnel stationed outside of the United States.

Child and Dependent Care Credit information