We only have an option to set the number of products per page.
Theme Options -> Woocommerce -> Number of Products per Page
There is no option to change the number of products per row.
This will require custom theme functions, which is not cover in our support scope.
You may want to try out the examples on https://docs.woocommerce.com/document/change-number-of-products-per-row/ or contact us for this customization https://theme4press.com/theme-customization-service/