The iOS 18 Beta hasn't been released to the public. It's expected to be available during WWDC 2024, and you might be able to upgrade to the iOS 18 beta a few hours after the event. If you've applied for the beta software program as shown in this guide, your phone should automatically get download permission for iOS 18 beta. Keep an eye on it!
Incorrect for 2 reasons. The first developer beta of iOS 18 will be available on June 10. No versions of iOS 18 are available yet, not even as betas. Also, the beta profiles no longer work, and all of the beta settings are in Settings > General > Software Update > Beta Updates.
Thank you for your feedback. The video does mention, "Currently, the iOS 18 Beta hasn't been released to the public. It's expected to be available during WWDC 2024, and you might be able to upgrade to the iOS 18 beta a few hours after the event." And WWDC is on June 10th. Regarding "beta profiles," while it's true that beta profiles no longer work, some RU-vid viewers might still believe they need a profile. The title is meant to help those searching for this information find what they need. The video actually demonstrates the current method of obtaining the beta, and where to check the "beta update", which is through Settings > General > Software Update > Beta Updates. you can double check the video for all the details.