{% assign userRating = product.metafields.custom.rating | default: 4.5 %}
{% assign userRatingRounded = userRating | times: 2 | round | divided_by: 2.0 %}

<div class="rating-container">
  <span class="star-group">
    {% for starIndex in (1..5) %}
      {% assign starFloat = starIndex | times: 1.0 %}
      {% assign halfPoint = userRatingRounded | plus: 0.5 %}
      {% if starFloat <= userRatingRounded %}
        <span class="icon-star full">★</span>
      {% elsif starFloat == halfPoint %}
        <span class="icon-star half">★</span>
      {% else %}
        <span class="icon-star empty">★</span>
      {% endif %}
    {% endfor %}
  </span>
  <span>{{ userRatingRounded }}/5 stars</span>
</div><style>.rating-container {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: Arial, sans-serif;
  margin-bottom: 10px;
}

.star-group {
  display: inline-flex;
}

.icon-star {
  font-size: 20px;
  line-height: 1;
}

.icon-star.full {
  color: #333;
}

.icon-star.half {
  color: #333;
  opacity: 0.5;
}

.icon-star.empty {
  color: #333;
  opacity: 0.2;
}</style>