How can I track inventory for individual and case sales on Shopify?

You can solve this issue in 2 ways.

  1. Finding an app that works for you. I took a quick look. I found one. Maybe it’ll be useful. The name of the application is “
    “Simple Bundles & Kits”

  2. Having a special app made for yourself. You can get this done by hiring a Shopify developer. The advantage of doing this is that everything happens in its own way. Of course, some budget is required.