Hello, @greenative,
1. Please go to Appearance >> Customize >> WooCommerce >> Product Catalog and choose “Products Per Row” as “2”: https://postimg.cc/QKdgBMcf
2. Then Please go to XStore >> Theme Settings >> WooCommerce >> Shop >> Shop Page Layout and choose “Products Per Row On Category Page” as “3”: https://postimg.cc/bd5S0LPy
Finally, publish it and check back your site after removing the browser cache, it will show the 2 columns on the Shop page with Categories and 3 columns on the Category page with Products.
Regards 8Themes Team.