What is collective noun for bottles?

There isn't a commonly used collective noun specifically for bottles. You could use a more general term like:

* Collection of bottles

* Set of bottles

* Group of bottles

* Array of bottles

You could also get creative and use something more descriptive depending on the context, like:

* Case of wine bottles

* Rack of beer bottles

* Pile of empty bottles

* Assortment of vintage bottles

Ultimately, the best choice depends on what you're trying to convey.