Hi Discoverykhalid,
Put your custom panel in <adobe bridge installation folder>/Adobe Briddge CC/Adobe Bridge CC.app/Content/Application Data/Custom File Info Panels/4.0/panels
Go to your Bridge CC installation folder and then Adobe Bridge CC. On Adobe Bridge CC.app right click and select "Show Package Contents" and then go to Content/Application Data/Custom File Info Panels/4.0/panels and put your panel there.
-Sunil