I remember reading them back in the early 90s (Robin Hood: Prince of Thieves, Far and Away, Back to the Future). They don’t seem to be a thing anymore (or am I just not noticing them).
As an aside I remember liking them but I was a preteen at the time so maybe they were terrible and I just liked the movies.
The most recent one I’ve heard of was Once Upon A Time in Hollywood.
I think novelizations have the potential to be cool, but the few that I have read felt kind of soulless. They just describe what was on the screen.