Please note that this Support article contains frontend customizations via modifying the legacy Algolia template files, which are deprecated and unsupported by the Algolia Support Team.
For more information, please review this Support article - "Why is modifying Algolia template files for customizations not supported?"
If you want to customize your facet values, you might need to use the transformItems parameter. In the code provided by our Shopify integration, this parameter is available on the algolia_facets.liquid.js file: