avgsvc.exe is a program which is most likely NOT a virus or malware. So, if avgsvc.exe is on your PC, it is most likely ok, and will NOT cause problems. Even if your PC is clean, it is still recommended to use a well-known antivirus with a good track record, in order to defend yourself against threats.
This program is usually stored in C:\Program Files (x86)\AVG\Antivirus\AVGSvc.exe.
The MD5 checksum for this program is 6a52a6f601768f3f10ded8be56c441dc.
This program is a Windows service. This means it runs on your PC in background, usually without displaying anything to you. Most Windows services are ok programs, which provide useful features to other applications or to the Windows Operating System.
This executable uses the net to communicate. In this day and age this is ok. For example, most of the apps on your PC check for updates. In order to do this, Internet communications are required.
This program runs as a 32-bit program. It can not benefit of the full power of modern computer processors. This ordinarily happens because the publishers did not bother to upgrade it to use the x64 instruction set.
The description extracted from the program is AVG Service.
File version 18.1.3800.0.
Publisher AVG Technologies CZ, s.r.o..
Copyright notice Copyright (C) 2018 AVG Technologies CZ, s.r.o..
avgsvc.exe has a digital signature. Nowadays most clean software applications are digitally signed.
The digital signature found in avgsvc.exe is valid. This is most likely a clean, ok program.
Digital certificate name: AVG Netherlands B.V.
Certificate's issuer name: VeriSign Class 3 Code Signing 2010 CA
It has an uninstall routine, which is a good sign. si are uninstall.