How to Create a Customizable Logo Bar Section - https://www.shopify.com/partners/blog/logo-bar

logo-bar-section-blocks-loop.liquid

<ul>
  {% for block in section.blocks %}
    <li class="logo-bar-section" {{ block.shopify_attributes }}>
      {% if block.settings.link != blank %}
        <a href="{{ block.settings.link }}">
      {% endif %}
      {% if block.settings.image != blank %}
        {{ block.settings.image | img_url: '150x150', scale: 2 | img_tag: block.settings.image.alt, 'logo-bar__image' }}
      {% else %}
        {{ 'logo' | placeholder_svg_tag: 'placeholder-svg' }}
      {% endif %}
      {% if block.settings.link != blank %}
        </a>
      {% endif %}
    </li>
  {% endfor %}
</ul>