Enter the Android shell environment:

The path storage/emulated/0/ typically refers to the external storage directory of the device, which is often used for storing files that are accessible by the user and apps. The rest of the path /android/data/moeshizuku/privilegedapi/ seems to point to a specific directory within an app's data directory.

adb shell sh /storage/emulated/0/Android/data/moe.shizuku.privileged.api/start.sh --user

To avoid typing the long command after every reboot, advanced users have created solutions: