I may have written into the wrong section.
So, I installed HLStatsX from here:
https://github.com/NomisCZ/hlstatsx-...i/Installation
Now, I do not know how to make the connection from the game server to the web server.
I understand, there must be some configuration and a Sourcemod plugin, of course, on the game server, but in his master.zip are so many sp and smx files, that I do not know which one is the right one to use and how (or even in which file) to configure it. I mean, somewhere must be put the IP of the web server and the MySQL credentials, I guess.
Also, it seems the web site is showing Team Fortress (instead of CSGO).
Solved, went by Maverick's tutorial.