Compared to the original Chapter Two?
Depends on the metric but I suppose the most in your face one is render count? So that's @ 4,500 vs 402.
By scenes...um..well a lot of scenes vary. So, for example, drinks with Annie which was one scene previously is now seven different ones depending on choices etc and of course we now have a pile of locations and free-roam we never had before.
My guess would be about three to four times as big content wise. I know my initial playtester spent the best part of a day playing it so make of that what you will. Oh, and that's before we have content variation depending on race and gender...oh and let's not forget the hidden content and...I dunno. Bigger. Much.
More importantly tho is everything is much better quality graphically. The renders pop, there are eleven animations, the writing is better, it's funnier, sexier and - for those who like plot - plottier. It's just better all round, I suppose?