My spectrum kid loves the Big Fat Notebook series. We have all of them. This is the one for science.
https://www.amazon.com/Everything-Yo.../dp/B07BGGFTXQ
These books are great for covering the standards without any fluff. We do tons of 'real world' learning, using books not textbooks, doing science, talking about science, etc. This books ties it all together and helps us see that he'll be on track to take high school science without any gaps. He enjoys reading it for fun.