On every product page (Single Product template)
Testimonials below the product details on every product, without editing products one by one.
- In VideoTestimonials, open Studio → Widgets, open (or create) a widget, and copy the code from its Code tab (HTML / Script).
- From your WP Admin dashboard, navigate to Appearance > Editor.
- Click Templates, then click WooCommerce in the left sidebar.
- Open the Single Product template, which defines the layout of individual product pages.
- Add a Custom HTML block where the testimonials should appear (click the Block Inserter or type /html) and paste the embed code.
- Save the template. Every product page that uses it now shows the widget.
Source: WooCommerce Docs: Customizing your store with templates
