USBC certified means the center's lanes are certified by the United States Bowling Congress, so scores bowled there count for USBC averages and awards. Kids Bowl Free means the center takes part in the summer program where registered kids bowl two free games a day; the button on the center page opens the center's page on the program's site to register.
Both come from the BowlersMart Lane Finder, a public directory compiled from USBC and other public data, refreshed weekly. If your center is tagged wrong, use Suggest a correction on its page, or claim the page if you run the center.