If you use the Smart Product Filter & Search app for your Shopify store, follow these steps to display star ratings on the collection page.
Login to your Shopify admin panel, go to the Theme folder.
In the Action dropdown, hit Edit code.
Find globo.filter.product.liquid file.
Add the below codes to the position you want star ratings show.
<ryviu-widget-total reviews_data=" {{product.metafields.ryviu.product_reviews_info | escape}}" product_id="{{ product.id}}" handle="{{ product.handle}}"></ryviu-widget-total>Click on the Integration topic in the Smart Product Filter & Search app's navigation left bar.
Tick on the below option under Ryviu app.
Click Save to finish.
If you need any assistance, please don't hesitate to ask us.