Like AQu01rius said, it really depends on if they were hiring at the time. Did you just drop off your resume at a store you wanted to work at or did you fill out an application when the store put up a "now hiring" sign? If there was a sign you should get a call within a week... any longer than that is unlikely. However if you just dropped off your resume a lot of stores will keep all resumes for about 3 months and may keep really good resumes for until the next time they need to hire.