Four things make the first answer useful
The space and roughly how much of it. What is on the floor today, and whether it is coming out. What the floor has to survive: a family, a rental turnover, cart traffic, a building that stays open. And when you need it usable.
With those four, the first reply can be about your job. Without them, it can only be a price range, and a price range that ignores the base condition is the number that changes later.
What we look at before quoting
Almost every surprise in a flooring job lives under the old floor. So the honest sequence is to look first: what the base is, whether it is flat, whether it is dry, and what the previous installation left behind. That review is what turns a scope into something that can hold its price.
If the project is not flooring alone, say so early. Kitchens, cabinetry and construction change the order in which trades enter, and the order is what protects the finish.