Aggregate reviews in the thumbnails of the Shop Page

Thank you Mike, for your answer! I have a different template but finally I found a solution for me by creating a loop file in my child theme and copying there an aggregate code from the product page. I did work out and now on my shop page the number of the reviews are visible.

I have another question: Is there any possibility to the create a rich snippet with the aggregate rating for all products and to display it on the shop page? Any code to add and where?

Thank you Mike! I did test my shop page with Google. Before I had made any changes, it had no global aggregate rating of all products on the shop page. Since I added aggregate rating on the loop of every product my shop page shows in the snippet dozen aggregate ratings which is an error for Google. Ideally, I would like to on the shop page:
1) total aggregate rating for all products working correctly for Google;
2) number of reviews for every product shown to my clients.
I now manger to get the 2nd option but not the 1st one. I will grateful if you know how to fix it.

Hi Mike,

I fully agree that my solution is not ideal and that I really need a customisation. But I am not a professional web-master, I am creating this site for me and I can do myself only very simple basic things like copy-paste, that is it.

That is why I have another question: do you or your company provide customization services I can pay for? If yes, I need your services to achieve on my shop page the following:
1) show the number of reviews for each product next to the stars displayed (without showing the aggregate rating for each of the products);
2) show the aggregate rating correctly displayed in rich snippets for Google of ALL products.

Please let me know if it is possible and how much it may cost. I can pay via Paypal if it is convenient, and will provide you with access to the dashboard.

Thank you very much!