Hey again!
I get it. If it doesn’t show up in Settings, I’ve seen this happen before with the Magic Keyboard, (If that’s what you are using). Sometimes if the keyboard firmware isn’t up to date this may happen, and it won’t show until it detects a keyboard with tough ID as being connected.
Does it show if you connect the keyboard by a cable?
If either of the scenarios above apply, I may:
Plug the keyboard in for a good hour, (While keeping the computer awake, as to update the firmware). Disconnect it, restart your Mac, log in. If the Wallet or Touch ID Settings still don’t appear, turn off the keyboard via the switch in the back or bottom, turn on again and give it a minute.
If I’m off, I apologize, but this is what I’ve seen with either Touch ID not working for certain things, or Wallet not showing up. It’s possible iCloud Keychain may have a role in this as well, let me know how it goes or if I’m off on the behavior you’re having or if I can help further, glad to!