Hi Tuan,

To make your categories show the number of products go to your site and navigate to Custom CSS, search for this part of code and delete it:

/* Shop: Category Title Count */
mark.count {
  display: none;
}

Save the changes and the product categories will count again.

There are not testimonials in our theme yet, we have already designed and are in the process of implementing them so until they will be included in the theme you cannot implement testimonials.