To publish a Street View tour with TrailBlazer you will need a GoPro Fusion 360 camera.
Once you have your GoPro 360 camera, you will need to mount it to the top of a vehicle or a helmet (for instance, if you're biking) to capture the footage with GPS on roads or trails.
Once you are done shooting, you will need to unload the footage to your computer to process in GoPro Fusion Studio V1.3 or higher. (link to section)
Once you have processed stitched footage, you can load that into TrailBlazer which will optimize and publish to Google Street View. (link to section)