This is an example of mega menu dropdown. You can edit it from admin panel -> HTML Blocks -> Menu shop.
All these pages are not included with a dummy content. You can configure your shop page as you need in Theme Settings -> Shop.
You just installed the latest version of the WoodMart theme. To finish the installation and enable all theme's function or if you see any problems with your WPBakery elements displayed as shortcodes you need to install the latest version of theWoodMart Core Plugin too. Go to Appearance -> Install plugins and click on "Install" or "Update" button.