iMovie and GarageBand Help
iMovie User Guide for iPad
iMovie is a video editing software application developed by Apple Inc. for macOS, iOS, and iPadOS devices.
https://help.apple.com/imovie/ipad/2.2/
GarageBand User Guide for iPad
GarageBand is a line of digital audio workstations for macOS and iOS devices that allows users to create music or podcasts.
https://support.apple.com/guide/garageband-ipad/welcome/ipados