Modern versions of Windows can often open .7z files directly within File Explorer, showing them as a folder.

To view the content of a (7-Zip) file, you typically need to use the 7-Zip utility or a compatible third-party application. How to View Contents

Open the 7-Zip application, navigate to the folder containing your file, and double-click the .7z file to see the list of files inside without extracting them.