I think even if a story doesn’t teach you anything else, it still teaches you empathy. Even sci fi and fantasy can teach you about the world around you, and the people in it. By far my favorite part of reading is finding out about different ways of life, whether real or imagined, & all they entail.

Obviously there is also the way reading teaches you about storytelling, structure, grammar, vocab etc but I find that depends on how well you retain knowledge. As i get older I find its harder for me retain things lol. But i used to learn so much from books growing up and i think it really taught me some emotional intelligence.