Every store initially has a default store view. You create other store views in order to support different languages in your store as well as for other purposes.

In order to create a new Magento 2 store view go to Stores > Settings > All stores. There, you have to find and press the Create Store View button.

Magento 2 all store views

Store View Information

  1. Choose the Store the newly created store view will be assigned to.
  2. Give the Magento store view a Name and a Code.
  3. Enable or disable the store view.
  4. Set the Sort Order of the store view. It defines the store view position in a list of  Magento store views.

After you've entered all the information don't forget to press the Save Store View button.

Magento 2 new store view information

Once you've created a store view you will be notified about its successful creation and it will appear to the list of execting Magento store views.

Magento 2 new store view

Once you've created a store view, do the Magento reindex, run the CLI command:

php bin/magento indexer:reindex

That is how newly created store view will be displayed on the storefront.

Magento 2 store view on the storefront

New Store View Creation is just one of the series of articles about How to Configure Multi-Language Magento Website? which include information about the language packs installation, useful multi-language store extensions, product&category, CMS pages&blocks, email templates, and other translations in Magento 2 website. You should definitely get acquainted with them in order to know how to manage a multilanguage store.