The installation location depends entirely on the game. Common paths include:
Always back up your game’s save files before adding new mods in case the files are corrupt or incompatible. MODS.7z
Usually found in SteamApps\common\[Game Name]\mods . The installation location depends entirely on the game
The original, free, and open-source tool for this format. You can download it at 7-zip.org . MODS.7z
Are you trying to install these mods for a , or are you looking to create your own mod archive? Oblivion Modding Guide - Less Is More Edition