Damn, whatchu apply for? Marketing? I know they give jobs to people fresh out of school regardless of degree tho so I guess that might be you. Breh, Whole Foods is easy as shyt you just need to know your HSH products. I worked in grocery so I was forced to learn all the shyt that's why I know so much about healthy eating. Whatever the department is just try to learn little bits of info first they don't expect you to know everything at once. So like if it's Speciality know a little about beer and wine, if its grocery then try to know the benefits of certain specialty foods or foods for people allergic to shyt. Trust it's no big deal, I worked there for a year and a half and knew my shyt better than multi year vets.
Hopefully you're at a good spot tho, I was gettin money while being surrounded by bad ass broads so I might've had more motivation. Just study a little on the location of your store so you know the demo, a little about specialty products(gluten free, hemp seeds/milk), and a little about the other departments. Them bamas would prolly pay you $20 on the spot if you went at em that hard.