Show the “ratingValue” and “ratingCount” values ​of KK Star Ratings Plugin

I want to display the “ratingValue” and “ratingCount” values ​​generated by the KK Star Ratings plugin (Github).

I made a JSON-LD SoftwareAplication and here is the code I use in function.php:

add_action('wp_head', 'add_jsonld_head', 1);
function add_jsonld_head() {
    if ( is_single() ) {
        ?>
        <script type="application/ld+json">
            {
      "@context": "http://schema.org/",
      "@type": "SoftwareApplication",
      "@id": "<?php echo get_permalink( get_option( 'page_for_posts' ) ); ?>",
      "softwareVersion": "<?php the_field('versi_terbaru'); ?>",
      "operatingSystem": "Windows",
      "applicationCategory": "<?php the_field('kategori'); ?>",
      "dateModified": "<?php the_modified_time('c'); ?>",
      "name": "<?php the_title(); ?>",
      "aggregateRating": {
        "@type": "AggregateRating",
        "name": "<?php the_title(); ?>",
        "ratingValue": "",
        "ratingCount": "",
        "bestRating": "5",
      },
      "publisher": {
        "@type": "organization",
        "name": "<?php the_title(); ?>"
      },
      "offers": {
        "@type": "Offer",
        "price": "0",
        "priceCurrency": "IDR"
      },
      "image":{
        "@type": "ImageObject",
        "url": "<?php the_post_thumbnail_url(); ?>",
        "width": "100",
        "height": "100"
      }
    }
        </script>
        <?php
    }
} 

How do I get the ratingValue and ratingCount values ​​from KK Star Ratings?

I have played around with this plugins but sadly my coding skills are not that good so I couldn’t figure out how to modify it. I would really appreciate any help I can get on this.