I'm seeing this a little late so you may have already found a job. I was looking for a part time retail job back in 2017 and was in the same boat...I had no idea how to apply. But I did go into the store and chatted with the assistant manager, who told me to go online, but she took my # and the store manager called me the very next morning.
Where do you live? I've worked in retail a lot in my lifetime, so I can definitely give you the scoop on some of the major players. I currently work 1, 4 hour shift a week at White House Black Market and have worked there on and off since 2017. For retail, I really like it...and the perks are amazing.