Onscreen keyboard does not appear when purchasing in App Store

Hello redge52,

Thanks for reaching out to us in Apple Support Communities about the keyboard not appearing in the App Store. We're happy to help by looking into this more! 

Try disabling Bluetooth to see if that helps. The iPad may be connected to an external keyboard. Here's a resource that can help:

Use Bluetooth and Wi-Fi in Control Center

Specifically, check out the section labeled "Disconnect from Bluetooth accessories"

If you still have issues, try restarting your iPad to see if hat helps:

Restart your iPad

Hope this helps.

Best Regards.