Вы можете подключиться к woocommerce_product_get_rating_html
.
Вот так:
add_filter( 'woocommerce_product_get_rating_html', 'always_get_rating_html' );
/**
* Always display ratings.
*
* @param string $html The HTML for ratings.
* @param float $rating Rating being shown.
* @param int $count Total number of ratings.
*
* @return string
*/
function always_get_rating_html( $html, $rating, $count ) {
$label = sprintf( __( 'Rated %s out of 5', 'woocommerce' ), $rating );
return '<div class="star-rating" role="img" aria-label="' . esc_attr( $label ) . '">' . wc_get_star_rating_html( $rating, $count ) . '</div>';
}