Hi Nick when you say "category" do you mean collection? Or perhaps some other category from Shopify on a product (like tag or vendor)?
If you're talking about collection, we don't work with Shopify collections right now but we have a bunch of feature requests that speak to this:
https://replo.featurebase.app/?q=collection
Outside of that, we have our own component called a Product Collection which might offer some solid functionality here:
https://support.replo.app/articles/1719603447-product-collection