The book felt dry and sort of boring to me. Which made me recognize that some movies can actually be better than the books they are based on. Which is not a given.
That being said, there are sequels for the original movie in paperback, which I've found to be very acceptable.
https://en.wikipedia.org/wiki/Blade_Runner_2:_The_Edge_of_Hu...
https://en.wikipedia.org/wiki/Blade_Runner_3:_Replicant_Nigh...
https://en.wikipedia.org/wiki/Blade_Runner_4:_Eye_and_Talon
Did you know?