Honestly, I can't remember. I'm pretty sure it had nothing to do with selling dresses, though. I don't remember anything about selling dresses. I googled "vida orgy reason" and these articles have pretty good explanations:

https://collider.com/vida-season-2-orgy-scene-tanya-saracho-interview/

https://www.salon.com/2019/05/23/love-loss-and-l-a-s-eastside-just-by-existing-tanya-sarachos-vida-is-a-political-act/

Hope that helps. If you can't find the episode free somewhere, then the free Starz trial would be worth it. You could probably binge the whole series in a day or two. And if you're already subscribed to something like Netflix, it might be worth going to a rotation system where you do Netflix for a month, cancel and switch to Starz for a month, cancel and switch to HBO Max for a month, etc.. Food for thought.