1. The first thing is to observe and count people's flow, as the upstairs said. The second is to note the geographical location of its storefront.

2. What kinds of dishes are provided in the store during the rush hour, what the price is, what the taste is, and what kinds of dishes are ordered by everyone?

3, 1+2 can roughly estimate the turnover. You can also spend a few more times, get acquainted with your boss, and chat flexibly.

4. If you want to investigate, you can help them do promotion and so on for free and get information from it. (e.g. wechat take-out)

5. If all else fails, go to the store and work for a month. I believe you can get the corresponding information.

Don't be in a hurry for business. Get more business information and be prepared to avoid difficulties later. For reference only.