Unfortunately, the VR Hangar app is no longer available. But you can see the Bell X-1 in the Google Arts and Culture app as well as on the Google Arts and Culture website.
TED-Ed offers a lesson about breaking the sound barrier. The lesson is called The Sonic Boom Problem and it explains how a sonic boom is created and how math is used to predict the path of a sonic boom in the atmosphere.
Here's some archival footage of Yeager's flight in the Bell X-1.