WP Store is a free theme for WordPress created by 8Degree Themes.
WP store is a feature rich woocommerce theme beautifully crafted by our designers to give best e-commerce experience in a simple design comfortable for every type of user.
(Description "WP Store" Theme from wordpress.org)
You can download WP Store for free via the provided download link and include it into your themes folder of your WordPress installation. Also you can directly search for it in the WordPress admin interface in the themes section and install and activate it from there.
More information, screenshots and reviews of WP Store Theme can be found here.