There is no official HP driver for Windows 11 for this model. HP discontinued support for the Scanjet 4370 many years ago (last official drivers were for Windows 7 / Vista). However, you can likely still make it work using the built-in Windows tools.
Would you like step-by-step screenshots for any of these methods? hp scanjet 4370 driver for windows 11
Here is the information you need for the on Windows 11 . There is no official HP driver for Windows 11 for this model