Not any longer!
You are now forced into a complete reset of this iPad using a full computer.
Sorry, but NO other choices or options, now.
If that iPad has NEVER had its data backed up, all will be lost forever, now.
Sorry.
You will need to have access to a full computer, like a Mac or Windows PC, try either using the Finder on a Mac that has the newest macOS Catalina, or later macOS, installed OR with an older Mac with an older Mac OS, download and install the latest iTunes version ( or latest iTunes for Windows PC ), make sure the Mac or Windows PC is connected to the Internet, connect your iPad by the USB charge cable to the computer and let the iTunes application fully reset this iPad.
Tap the link below for the procedures needed.
If you forgot your Apple ID password - Apple Support
Make sure your iPad is, at least, charged to 50% or greater to attempt this.
If NO access to a Mac or Windows computer, you will have to seek help from a good friend or family member, with a full Mac or Windows PC, to help you out
OR
Search online to locate and call contact your nearest, “local” Apple Store location to try/attempt to make an appointment to get your Apple iPad upgraded/updated to its latest iPadOS 15 version.
Apple Store employees will be glad to help/assist you.
Sorry & Best of Luck to You!