Here are some options you could use, depending on the context:
Informal:
* A pile of shoes
* A rack of shoes
* A pair of shoes (if you're talking about a matched set)
More creative:
* A fleet of footwear
* A collection of kicks
* A wardrobe of shoes
You could also describe the specific type of shoes you're referring to:
* A pair of boots
* A set of sneakers
* A collection of sandals
Ultimately, the best option depends on what you want to convey and the tone of your writing.