https://wccftech.com/want-to-download-ios-12-beta-6-without-developer-account-heres-how-you-do-it/

iOS 12 Beta 6 is now available for registered developers. Here’s how you can grab it without a developer account with Apple.

Apple has released the sixth beta of iOS 12, and even if you don’t have a developer account, you can still go right ahead and download the latest pre-release build on your iPhone or iPad before it becomes available for public beta testers later in the day, or tomorrow.