There are at least two ways to do what you're asking.
1. Open Bridge and select all the images you want to process; press CTRL+R to open them in Adobe Camera Raw. Process the first image, then press the Select All button, then the Synchronize Button and from the dialog box that appears choose the settings you want applied to all your images.
2. Select a RAW file in Bridge and open it in Adobe Camera Raw. Process it to your satisfaction, and when finished click the Done Button. Back in Bridge, select all the files to be processed, right-click and from the context menu select Develop Settings > Previous Conversion.