Setup store information in order to provides the basic information that will be used on sale documents and in other communications. The Store Information you need to add includes phone number, country, region/state, Zip code, VAT number, etc. Especially, all of these information are flexible to edit whenever you need.
However, because Magento 2 platform supports multiple settings to custom, sometimes it can be quite complex for store admin to find exactly where to edit it. The following guides are helpful for you.
Stores. Then under
Store Informationsection, and do the following:
Store Namethat you want to use in all communications.
Store Phone Number, formatted as you want it to appear.
Store Hours of Operationfield, enter the hours your store is open for business. For example: Mon - Fri, 9-5, Sat 9-noon PST
Countrywhere your business is located.
Region/Statewith the country.
Store Address. If the address is long, continue the address on
Store AddressLine 2.
VAT Numberof your store. To verify the number, click the
Validate VAT Numberbutton.
Ref: Magento 2 user guide
It comes to the end of tutorial: How to setup store information: phone number, address, VAT number in Magento 2.