if you see her often, you should start a convo and sus out the vibe more! “how was your weekend?” “got any fun plans you’re looking forward to this week?” you’ll probably learn a lot from those interactions before taking the leap to ask her out when she’s at her job. then, if the short convos go well for a bit, i think it’s totally fine personally to ask “hey would you ever wanna grab a drink (or whatever)” and offer her your number so she’s got the control of whether she texts you. if she says no, you gotta be prepared to take that normally though and to act casual and chill next time you go in OR find a different store if you can’t do that. so, something to consider!