If you put your CD in the computer, the relevant program should launch it. If not -
Open Windows media player to play video / audio.
If WMP can't play, then you can download VLC media player which is supposed to be the most versatile player.
https://www.videolan.org/vlc/download-windows.html
If this is containing other than video / audio, you can click on CD symbol in File Explorer to browse through the contents and double click to open the file.