It is very easy to do if you install keylogger software https://www.refog.com on your child's computer. With this program you will know what sites your child visits, with whom and what he is talking about, what files he is sending and much more.
So I decided to use android keylogger https://www.hoverwatch.com/free-android-keylogger . This is a program for monitoring the location of children, which must be installed on a smartphone for each parent. They allow you to plan your own time, communicate with your child and remain confident in his safety when he goes to school or to other places.