You must select your brand attribute in Theme Settings -> Shop -> Brands
Start typing to see products you are looking for.
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.