The three files go into your install directory, for example:

E:\DCS World\Mods\aircraft\AH-64D\Cockpit\Textures ---> AH-64D-CPT-TEXTURES.zip

or

D:\SteamLibrary\steamapps\common\DCSWorld\Mods\aircraft\AH-64D\Cockpit\Textures ---> AH-64D-CPT-TEXTURES.zip