Where do i download this

[FroofyFroof]

There0's only a go to file button but no download

[Picometer12]

To the right of Go to file is a green button labeled Code. You can click that and then download zip.

But if you want to load this into Automatic1111, you can do it more easily and directly by copying the URL (also under the code button) and pasting into Extension -> Install from URL tab -> URL for extension's git repository