This thread is, I would think, more WHERE to meet busty women. (But there's nothing wrong with that.)
One of the easiest ways, of course, is to work at a mall. Each mall job has its own different pros and cons in terms of exposure, potential length/intensity/flavor of interaction, likelihood of one-on-one interaction, age and type of women you're likely to meet.
Working in the food court probably offers the most broad opportunities, in terms of the fact that the majority of the people who come through the mall stop in the food court at some point, but also it's a crapshoot because everyone likes different restaurants there, and I doubt the demographic breaks across them in any way that's major or helpful; also, it is at many points an extremely busy and stressful and thankless (and low-paying and menial) kind of work, focused on minimal interaction with extremely quick turnover. You're not wildly likely to grab a date with many girls you meet working in the food court, even if it's immediately clear there's mutual interest. But you're gonna SEE the most busty girls there.
I don't even know if they hire men very often in the lingerie stores, plus women are gonna most likely be on higher guard with a man there. Don't waste your time, I'd say.
There's the fragrance section in department stores, but that's (believe it or not) the single most difficult job to obtain in a department store, and potentially the most sought-after job in the entire mall, because it's glamorous, very easily run, nets a high commission, and can make very good connections via customers in business and such. People bust their asses for YEARS at department stores to get to the fragrance counter, and when they do, they never leave. If you're not already working sales at a department store already, don't bother. But if you are... It's much more one-on-one interaction; you can get very friendly and strike up conversations that last a while. I've had some great interactions with people who sell me cologne, and actually once picked up a girl while we browsed at a cologne counter. Working fragrance you're gonna meet mostly outgoing types, a lot of well-tended MILFs with a little money, fun and self-possessed young girls... But most of all those will be buying cologne for their husbands/boyfriends, or buying perfume to impress them.
Jewelry stores are also glamorous and high-exposure, with lots of time spent with customers while you guide them to the right (expensive) choice. Requires good expertise (but can be learned), nets high commission if done properly. But most of the women you meet will be at least dating, if not married or engaged.
A lot of the stores that sell only women's clothing don't typically hire men much, but there are many that sell to both genders. Go for it; that's your best bet in a mall.
Another good one is if the mall has a pet store. You get more women coming through in a mall pet store than an out-of-mall one because for those, they have to go FOR need of being in a pet store. Whereas a mall pet store, you're already in the mall, it's nothing to spin through and check out the puppies. I've met girls browsing in those too. They get to see you being good to the animals. The critters do the hard work for you.
If you can stand the hatred everyone flings at you (often rightly so, IMO) and can handle the sales pressure and the constant rejection, working at a cell phone booth or any of those other "HEY CAN I ASK YOU A QUESTION?" kiosks are good for it. You're not in a store or shackled behind a food court counter, you're actually out IN the crowd flow and see everyone who comes within several yards, and if you know how to get them over to you and make things happen, it's a good way to meet women.