Greetings, watchhelp22!
Thanks for using Apple Support Communities! If we understand correctly, you want to see if your Apple Watch would still show up on the Find My app after being missing for a while. You've been using If Find My is offline or not working.
We've found a great resource that should answer your question. Check this out: If your Apple Watch is lost or stolen. After reviewing this guide, you'd want to focus in on the section "If you don't see your Apple Watch on the map" as it explains the reasons why this might happen. From what you've shared, it could be because it's not connected to either Wi-Fi or your iPhone. Treat the steps included as a checklist to help you out.
Kind regards.