It's possible that you meant "shawl," which is a type of garment.
If you meant "shawl," the collective noun for a group of shawls would be a heap, pile, or collection of shawls.
For example, you could say:
* "There was a heap of shawls on the bed."
* "The shop had a collection of beautiful shawls."
Let me know if you meant a different word, and I'll do my best to help!
