AirTag not showing up on my Bluetooth list of connectable devices

I followed directions all the way through “connect “, but now I have no idea if it is as it does not show up on my Bluetooth list of connectable devices. Intend to put it in my luggage. How do I know if it is working and where do I go to see where luggage is at anytime?

Help please

[Re-Titled by Moderator]