There are many books written for actors that talk about how to convey emotion through tone, facial expressions, and body language. Although they tend to be over-exaggerated, I’ve found them to be helpful because they point out common social cues that non-neurotypical people don’t always learn otherwise. Some books even mention how social cues vary between cultures.
I’ve heard those can be useful. Do you know any specific books that are good?

I’m generally really uncomfortable with acting-based “social skills" because a lot of what people are looking at is stage conventions, not natural emotions. Then to some people stage conventions start to look more realistic than real emotions. I hate it. (Especially since I often get the short end of the stick in such situations. I’m 100% real, but I’m rarely a stage convention. And I’ve been penalized for that.)

That makes a lot of sense.

I’m not really familiar with acting at all. It seems plausible to me that some people could learn some things from it, but I could see how it could be really dangerous to put too much trust in it.