Where Do I Set Shipping Countries?

Shipping Countries

To set your store’s shipping destination countries (and states) within the old admin, you would have needed to go to Settings ->Shipping ->Shipping Countries as shown here:

Using the new admin, this same section can be found by going to Settings ->Shipping and clicking on the “Country List” link located to the far right (under “More Options”).

The functionality for the country list is the same as before in the old admin.