This will open the Files app in iOS11, now you have two options you can either:
Download FileBrowser Professional
Download a FREE Trial of FileBrowserGO
Navigate to the correct folder where you stored your Photoshop or Procreate brushes.
Once you have found the brush you want simply tap on it.
Follow our simple how to guide and import your Photoshop Files from your computer into ProCreate.Show me how
Follow our simple how to guide and export your ProCreate Files as Photoshop PSD files back to your computer.Show me how