file type image:

{{ product.metafields.product.variant_swatch_1 | img_tag }}

product type url:

{{ product.metafields.custom.prod_link_1.value.url}}

Multiple product type:

{% assign cust_product = product.metafields.custom.complete_the_look_products.value %}
{% for cust_product in cust_product %}

{{ cust_product.title }}

{% endfor %}