https://wccftech.com/download-ios-14-beta-7/

Apple has released iOS 14 and iPadOS 14 developer beta 7 for both iPhone and iPad users. It is an over the air download.

Beta 7 of iOS 14 and iPadOS 14 is now available for download. Just like the sixth-beta, this one's available as an over the air update if you already have a previous beta installed on your compatible iPhone or iPad. And as ever, this beta is packed with more bug fixes and performance related enhancements, making it an important update to those who have installed the beta on a device that serves the purpose as a daily driver.