Hi @olegin!
Do the items in question have actual reviews? It will need to have reviews for review and aggregateRating to be generated.
Alternatively, if you’d like to remove the product schema markup from your product and shop category pages, then there’s some code here. You can add that code to your child theme’s functions.php file or via a plugin that allows custom functions to be added, such as the Code Snippets plugin. Please don’t add custom code directly to your parent theme’s functions.php file as this will be wiped entirely when you update.
You can read more about adding custom code to your site the correct way here:
https://rynaldo.com/how-to-add-custom-code-to-your-woocommerce-wordpress-site-the-right-way/
Cheers!
