If you are talking about the Api mods, you have to download the Api and copy paste its contents to your Win64 folder.
Located at:
Steam\steamapps\common\ARK\ShooterGame\Binaries\Win64
Then download the mods and copy and paste thier contents into your Plugins folder.
Which will then be located at:
Steam\steamapps\common\ARK\ShooterGame\Binaries\Win64\ArkApi\Plugins
Then start your server.
Located at:
Steam\steamapps\common\ARK\ShooterGame\Binaries\Win64
Then download the mods and copy and paste thier contents into your Plugins folder.
Which will then be located at:
Steam\steamapps\common\ARK\ShooterGame\Binaries\Win64\ArkApi\Plugins
Then start your server.