The official link follows the standard Apple TestFlight format: https://apple.com followed by YouTube's specific unique identifier code.
Just remember: If anyone asks you to pay for an invite, they’re running a scam. The only currency that unlocks YouTube’s beta is patience, timing, and a lot of refreshing. youtube beta testflight free
Accessing the YouTube beta on iOS via TestFlight allows users to test new features before they are released to the general public. While TestFlight app and participation are The official link follows the standard Apple TestFlight
Premium-like experimental features temporarily available for testing. Step-by-Step Guide to Joining YouTube Beta for Free youtube beta testflight free