You'll usually need a credit score in the good to excellent range to be approved for the Discover it Cash Back card, which means a FICO score of at least 670, or a VantageScore of at least 700. If you're not quite there yet, there are other Discover cards you may qualify for. The Discover it Secured Credit Card, for example, is geared to folks who are new to credit or rebuilding credit. And the Discover it Student Cash Back is an excellent option for college students who don't have a long credit history.