Unfortunately, all too often not enough. But then again often one has UX designers for that, but they are all too often off to build flying castles in Figma.
Visual design is only one part of UX- interaction design and information architecture are equally important components.
At my last two jobs, when I did v front end work I had to coach designers through UX on a regular basis, because the designers did as much for the marketing department as they did for the development team.
Sadly, UX as a discipline doesn't get much love from most companies.
Most of UX design for the past ~15 years has been new and innovative ways to trick users, lie without really lying, and annoy your users just enough so you can extract what ever you need to extract, but not too much such that they actually leave.
If you want to create good UX, I would look at whatever the big dogs are doing (Amazon, Meta, Google, et. al.) and not do that.
