How can I tell what's the region of my Apple ID?

Good day to you Murrayjw2, 

The region of your Apple ID is going to be the region that your iTunes and App Store are set to, the region your billing address is in, etc. The easiest place to see it is by visiting the following site - Manage your Apple ID, signing in with your Apple ID, choosing Personal Information and then Country/Region. 

You can also change your country region there as well, if you prefer but the article you came here through goes over other places to change it as well, including what needs to happen prior to changing it. 

What to do before you change your country or region

• Spend any balance remaining on your Apple ID. If you're not sure whether you have a balance, check your Apple Account balance.

• Cancel your subscriptions and wait until the end of the subscription period. 

• Wait for any memberships, pre-orders, movie rentals, or Season Passes to complete, and wait for any pending store credit refunds to process. You can cancel a pre-order.

• Make sure that you have a payment method for your new country or region. See what payment methods you can use.

• Redownload your apps, music, movies, TV shows, and books on any devices that you might use to play or read them in the future. Some types of content might not be available in your new country or region. Learn what types of content and services are available in your new country or region.

Thanks.