If your goal is to just finish a book, you can listen to an audiobook at 3.5x speed.
Some books are easy, some books are hard. If you pick easy books you can go through them much faster
You have to pick your goals and priorities about what you want from the book.
I mostly read non-fiction books that are not heavy in academics. So most of them are not written to be lean if you know what I mean
Being able to tell people I've read 100 books was pretty cool but it was just a vanity metric to boost ego. It's pretty dumb to be honest. Theres better ways to consume a huge amount of information.
This doesnt apply to domains that require deep knowledge/learning ie: programming, engineering, sciences, math, algorithms, hobbies, etc.
Also things you learn from books are not a rule of law, which Ive noticed that is something people tend to forget.