1. What food would you like to order?
2. What food would you like to have/want?
The first sentence is better. The sentense patten
What=什麼 food=食物(if we miss food, we don't know whether you are talking about what.)
would=想要(polite way, can miss 請問)
you= 你
order=點 (for the second one, if you are not talking about 點, you can use them.)
LINKING:
(would you) 'd' must link with you.
would you like something to eat?
what would you like to eat?
may I take your order?
would you like to order something to eat?
what would you like for breakfast/ lunch/ dinner?