Dashboard lights won't come on after new battery install

Hello, are you speaking of the illumination for nighttime driving, or all dash lights including display information? If that's the case, there must be some kind of blown fuse, even If someone told you otherwise. If it's illumination - make sure to check your lighting dial to ensure it's on the bright setting.

Autozone employees are in the business of selling parts - they are not trained in diagnosing problems. If he didn't use a test light or a power probe to check your fuses, & check at multiple fuse boxes, he did not check your fuses properly. I would 1st check the dash light dimmer switch to make sure it isn't dialed to dim, if not, then find a wiring diagram to see which fuses, power sources, & grounds are related.