You need a free Adobe account to activate the software and for license validation every 30 days. Alternatives Adobe recommends transitioning to their new apps: Premiere on iPhone : A free, updated video editor.
Tell you which are best right now (like CapCut or Splice). Adobe Premiere Rush Free Download
Download the Premiere Rush app from the iOS App Store or Google Play Store. You need a free Adobe account to activate
Free unlimited exports on mobile devices (iOS/Android). Adobe Premiere Rush Free Download