Hello,
Thank you very much for choosing our theme and for contacting us.
This product template is created by Woocommerce builder of WoodMart allowing to create custom templates for product pages and other functional pages that are not editable by default. Woocommerce builder is the inbuilt functionality widget included in the builder you use on the site.
Please check this manual: https://xtemos.com/docs-cat/woocommerce-layouts-builder/?theme=woodmart and https://xtemos.com/docs-topic/single-product-page-builder/
You need to find the single product template in the Dashboard > Layout, edit it or create your blocks.
If you have any questions please feel free to contact us.
Best Regards