Connect your iPad to Wi-Fi
Open Settings
Tap your name at the top
Tap iCloud
Tap iCloud Backup
Turn on Back Up This iPad
Tap Back Up Now
Keep your iPad connected to Wi-Fi until the backup finishes
Check the last successful backup time under iCloud Backup
To back up to a Mac, connect your iPad to the Mac
Open Finder on Mac with macOS Catalina or later
Select your iPad in the Finder sidebar
Click Back Up Now
To back up to a Windows PC or older Mac, connect your iPad to the computer
Open iTunes
Select your iPad
Click Back Up Now
To include saved passwords and Health data, choose Encrypt local backup
Keep your computer connected until the backup completes