Range for Wireless Access Point?

There is no standard answer to this question as there are too many variables that are unknown in your question. What make/model of AP? What type of antenna is being used with the AP? Is this for inside or outside use? If inside, what is the building layout and what materials are the walls made out of? If outside, are there trees or other buildings in the way?.... and these are just a few questions.

Another important question is what is the client device?
There can be a big difference in range between laptops.