Microsoft added several improvements and features to the Your Phone app with the rollout of Windows 10 20H1 Build 18932 to Insiders in the Fast ring. New features include remote control for Android devices from touch-enabled PCs. Microsoft also added notifications integration for all Insiders running a May 2019 release or newer on their Windows computers, allowing them to interact with the notifications using their mouse and keyboard. The feature is currently rolling out to all Windows 10 users with April 2018 update and newer and, as detailed by Redmond, it could take several days until it lands on all devices running the app.
Source: https://www.bleepingcomputer.com/news/microsoft/microsoft-rolls-out-android-remote-control-for-windows-10/