Where to find your telemetry file
In RaceChrono, open the session and export it as an RCZ file.
Where to find your video file
If you recorded with a GoPro or similar
Copy the original video file from your camera's SD card using a card reader.
If you recorded with RaceChrono
On Android, look in /DCIM/RaceChrono/ for the raw video file.
On iPhone or iPad, look in the Photos app for the album named RaceChrono.