that's an interesting question. i don't read a lot of Sci-fi but there are some prominent texts...like The Time Machine, AD2001, or Do Androids Dream of Electric Sheep (the book Blanderunner is partly based off). i sometimes read cyberpunk - William Gibson is very good & well-known in this genre.

i think you should check out the wiki page - it looks very comprehensive and it's probably a good place to pick up on key figures of sci-fi. i find that a lot of reading goes into writing (at least ideally lmao) so maybe it would be good for you to check out some books too! (this comment written super fast between classes shall contemplate more during the day...)