Ensure you are using the official 7-Zip website to avoid malware, as malicious sites exist.
If you need to search for text inside the archive without unpacking it first, this free tool can look inside .7z archives. Important Tips for Handling .7z Files BLP024.7z
Available via the Chrome Web Store.
Are you trying to the contents to look at specific files, or search for a specific phrase within it? Ensure you are using the official 7-Zip website
If 7-Zip reports an error, the file header might be damaged. Try opening it in a Hex Editor. a data dump
did you download this file from? (Knowing the source can help identify if it's a game mod, a data dump, or a backup).