Install iPadOS 13.7 for Mouse & Trackpad Support
If you skipped iPadOS 13.4, iPadOS 13.4.1, iPadOS 13.5, iPadOS 13.5.1, iPadOS 13.6, and iPadOS 13.6.1, you get iPadOS 13.4's features with your upgrade.
One of the best features is mouse and trackpad support. This is useful if you plan on buying Apple's new Magic Keyboard for an iPad Pro.
On top of that, iPadOS 13.4 added support for Magic Mouse, Magic Mouse 2, Magic Trackpad, Magic Trackpad 2, and third-party USB and Bluetooth mouse options.
It also introduced multi-touch gestures when using the Magic Keyboard and Magic Trackpad 2.
Multi-Touch gestures on Magic Keyboard for iPad and Magic Trackpad 2 allow you to scroll, swipe between app spaces, go Home, access App Switcher, zoom in or out, tap to click, secondary click (right-click), and swipe between pages.
Multi-Touch gestures on Magic Mouse 2 enable you to scroll, secondary click (right-click), and swipe between pages.