Hello Alex, Ben here - your Shopify Guru!
That tag only works within our app the view count is stored in a microdata attached to the products inside a metafield.
You could work around this by writting the product reviews elements to the DOM inside a hidden div wrapper then parse the elements using some javascript to extract out the value of the review count which is stored inside a meta tag itemprop as "votes".
Here is an example of how this would work:
<div class="review-parse-wrapper" style="display:none;" >
{{ product.metafields.spr.reviews }}</div><div class="display-vote-count"></div> {% comment %} this is the holder for your review count {% endcomment %}<script>
$(document).ready(function () {
$('.display-vote-count').html($('meta[itemprop="votes"]').attr('content'));
$('.review-parse-wrapper').html('');
}); </script>
This code will write the review app metafield to a hidden <div> tag then extract it, and place it in the <div> with the class of "display-vote-count". You could move that <div> tag to where you wish to display the review count.
I hope this helps! Feel free to reach out if you have any further questions :)
Cheers,
Ben Czegeny - Shopify Guru
Support@Shopify.com