Hello,
Thank you for contacting Rank Math and sorry for any inconvenience that might have been caused due to that.
The image you show us in the screenshot is used when you are adding a product in a post, page, or custom post type.
In your case, since you are already in a Product (Woocommerce), the plugin detects it and configure all the Product Schema automatically using the information you add in the Woocommerce fields and in the other Rank Math settings; so you are not doing anything wrong.
Looking forward to helping you. Thank you.
Hello,
Since we did not hear back from you for 15 days, we are assuming that you found the solution. We are closing this support ticket.
If you still need assistance or any other help, please feel free to open a new support ticket, and we will be more than happy to assist.
Thank you.