How to allow children to sign into apps with Apple ID?

Hello Jweisman1309,

To confirm, are you wanting to share applications to a child's device, or looking to set up a childs Apple ID for them to use to download applications? If you're needing assistance with creating a child Apple ID, you can follow the steps listed below to do so. You can also find these step outlined in the following article.

"In iOS 16 or iPadOS 16 or later

1. Go to Settings > Family. 
2. Tap the Add Member button .
3. Tap Create Child Account, then tap Continue.
4. Enter the child's name and birth date. Be sure to enter the correct birth date — you can't change it later.
5. Follow the onscreen instructions to finish setting up the account. For your child's Apple ID, you can use their email address, the suggested @icloud.com address, or their Game Center nickname."

Create an Apple ID for your child

As for sharing applications with your child, you can do so using family sharing. You can learn more about sharing apps and purchases via the following articles.

Set up Family Sharing

How to share purchases with your family

Have a great day!