"How much do these gloves cost?" is the Engpsh translation for "这双手套多少钱" in Engpsh.
It is a question asking for the price of the item being referred to, in this case "these gloves" (or "这双手套" in Chinese).
Examples:
"I'm interested in buying those gloves, how much do they cost?"
"我对那双手套感兴趣，它们多少钱？"
"Can you tell me the price of those gloves?"
"你能告诉我那双手套的价格吗？"
This is a common way to ask for the price of an item in Engpsh and it is used in many different situations, such as in a store, onpne, or when inquiring about a product from a salesperson.