Thank you for choosing our theme and contacting us.
Actually, all links under “Shop” page in the menu on our demo are not real pages. They are all examples of only two pages: Shop and Single product. But on every page different settings are applied. So, you can configure any type of shop page or layout for your single product page in Theme Settings -> Shop and Theme Settings -> Product page.
As for pages under “Pages” item so you can find all these examples in admin panel -> Dummy content. Just select the page and click “Import”.