What is the collective noun for pack of juice?

There isn't a traditional collective noun for a pack of juice.

Here are some options you could use, depending on the context:

Informal:

* Bunch of juice boxes

* Box of juice

* Carton of juice

* Selection of juices

More formal:

* Assortment of juices

* Variety of juices

You could also be creative and invent your own collective noun, like:

* A "splash" of juices

* A "quench" of juices

Ultimately, the best option will depend on the specific situation and the desired tone.