It really depends on your OS, and how much apps you use.
Antiviruses, for example, place files in system32. So there is no definitive 'amount of files' in system32.
DO NOT TOUCH THE FOLDER! It will break it nearly as much as deleting the system32 will!
1. C:\windows\system32\drivers and c:\windows\system32\config
1. C:\windows\system32\drivers and c:\windows\system32\config
The System32 folder and its subfolders contain the core operating system files for your Windows installation. No matter what anyone tells you do not delete this folder. Tampering with any single file may make you computer a paperweight.
c:\widows\system32\driverstore
C:\windows\system32\drivers and c:\windows\system32\config
Data files for what? The system? Undoubtedly that'd be the system32 folder, but your best bet, look in the C:\WINDOWS\ folder for all of them.
Delete all files in the "temp" folders
1. C:\windows\system32\drivers and c:\windows\system32\config
The Win32 folder, often referred to as the "Windows System32" directory, is generally located at C:\Windows\System32 on Windows operating systems. This folder contains essential system files and libraries necessary for the operation of Windows and its applications. In 64-bit versions of Windows, there is also a C:\Windows\SysWOW64 folder, which contains 32-bit applications and files.
c:\windows\system32\dllcache
You shouldn't get a new folder, System32 is a virus and you should delete it instantly.