Are you trying to the contents to look at specific files, or search for a specific phrase within it?
If 7-Zip reports an error, the file header might be damaged. Try opening it in a Hex Editor. BLP024.7z
Available via the Chrome Web Store.
A free alternative available in the Microsoft Store. [iZip (Mobile): For accessing on iPhone or Android. Are you trying to the contents to look
How do I search the content of 7-Zip archives (.7z)? - Super User to properly look into a file
Based on your request, to properly look into a file, you are dealing with a compressed archive, likely requiring specialized software to open and inspect its contents. How to Open/View the Content
To give you a better look into this file, could you tell me: