WooCommerce has become the main way to add eCommerce functionality to any WordPress website, but as WooCommerce has evolved, the set-up and installation process has become a bit more cumbersome. Not in a bad way, but in an "I'd really like to skip this and come back later and fill in all this information way"…
This leads to the likelihood that WooCommerce won't totally install all the way, and your site might be left without critical pages that WooCommerce automatically creates when you don't skip any parts of the installation process.
These pages are "Cart," "Checkout" and "My Account."
This video shows you how to restore these pages if the set-up process doesn't finish, or if your pages get accidentally deleted.