If this file is for a specific application (like a GPS map for or a game mod), move the extracted contents to the application's "map" or "content" folder after unzipping.
If you can tell me or what program it's for , I can give you the exact steps to install it. Turkiye-2.7z
If it asks for a password, check the source where you downloaded the file. If this file is for a specific application
Free, open-source, and handles .7z files natively. Download here . Turkiye-2.7z