So You Want to Read Sexworker Catwoman
In that case, you're in luck, because there is 20+ years of comics continuity for you to enjoy with a canonical sex-working/ex-sex-working Catwoman and with everything from noir-ish crime solving and harm-reducing in Gotham's East End to heightened narratives full of high adventure and a little (or more than a little) 90s comics excess and, well, some misadventures as well (but discussing Identity Crisis and related mind-wiping is not the topic at hand).
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So You Want to Read Sex Worker Catwoman
This wasn't a resource I could easily find when researching the topic and I know a lot of people may be interested in it, so here is an overview of Catwoman's history as a sex worker in comics.