So dollar stores are one of the "type" stores to look for in real estate investing when you're trying to determine the class of rental/tenant in a neighborhood. Having one near a place doesn't automatically make that area have an abundance of the class of rental associated with them, but it is rather looked at as a whole. On one block is there a dollar store, a check cashing place, a laundromat, and a payday loans center? You're probably looking at Class C. Panera bread, Lululemon, a Starbucks, and a Chase Bank? You're probably in a Class A neighborhood/maybe upper Class B if it's all in a shopping center.

E.g. https://morrisinvest.com/blog/2016/12/2/whats-the-difference-between-and-a-b-and-c-neighborhood/

There are many other factors though, and again it's looked at as a whole not just as "dollar general is in the neighborhood guess it's class C now" or something like that.