Raw files need to be analyzed by a program sometimes called a "Raw converter" or "Raw developer" or "Raw processing program". That program uses its knowledge of the particular sensor type used in your camera, along with various conversion techniques and the settings that you've selected in the program, to produce an image from the data. Typically you'll save the image as a JPEG, although some people save the image as TIFF. On most cameras, a Raw file also contains a low-resolution "preview" JPEG file that software could use to provide thumbnail images and such. Some software programs know how to find the preview JPEG, some don't.
Raw files have to to be analyzed by a "Raw converter" program. This program uses various conversion techniques to produce an image from the data. In general you'll to save the image as a "JPEG", or as "TIFF".