Translation:Which pair of shoes would you like to buy?
Is it necessary to have to say pair of shoes？ Technically you are saying pair of shoes in Chinese, but you wouldn't say that in English..
I'd be more inclined to say "which pair do you want?"
"Which shoes do you want?" sounds slightly unnatural to my native ear although the similar phrase "which shoes do you like?" somehow seems ok...
I put "which shoes?" We would say that in English more than we would say "which pair of shoes?"