Sorry for the late reply.
Have you install our Jewelry Store Pro theme and Woocommerce plugin on your site? If not, then login to your admin dashboard -> Appearance -> Themes -> Add New -> Upload your downloaded .zip file of theme here.
It will take few minutes after uploaded, then activate it. Now you need to install Woocommerce plugin on your website. It is recommended plugin to add your products with the help of this plugin. Here is the link https://wordpress.org/plugins/woocommerce/
Please download this plugin and go to Admin panel -> Plugin -> Add new -> Then upload your plugin here and activate it. Now you can add and display your products on your website.
Video Tutorial link -> https://www.youtube.com/watch?v=caqkBj74sbM
If you have any query then contact us again.