Svchost.exe is a process that hosts Windows services to perform various functions. There can be multiple instances of svchost.exe (host process for Windows services) running on your computer, with each instance containing different services. Especially on Windows 10 v1709 and Windows 11, you might see 50+ Svchost.exe processes.
Using Task Manager, you can view the list of Services running under a particular svchost.exe process. Read more