If you let me know where you found this file or what you expect to be inside it (e.g., Minecraft mods, Photoshop brushes, or music samples), I can give you a much more specific guide on how to install or use it.
Once extracted, you can usually identify the purpose of the pack by the file extensions found inside: Pack 1185.zip
: Likely an Asset Pack for graphic design, UI elements, or textures. If you let me know where you found
: If the pack asks for a password, it is often found on the page where you found the link. Common default passwords for community packs include 1234 , password , or the name of the website/uploader. or music samples)