Here is a small book about Sonic.
It is "Video Game Heroes- Sonic: Sonic The Hedgehog Hero". The book is part of the "Video Game Heroes" series, a batch of short books for little kids, each written about a different popular video game character. The book is supposed to present various facts, pictures, and history about the character. So, it's going to list off things like first-appearance dates, various games/systems and stuff like that. It would only be good for a beginner-type fan.
The book is only 24 pages long though, so it's not going to have a lot of content for the price. It's also 'for the kids', so it's not going to have anything new or unseen inside. It is written by Kenny Abdo, and is probably a late 2020/or early 2021 release. It can be found on Amazon, but likely should show up elsewhere.