Pavlov is a really large game with two separate installs an APK file and an OBB
Ensure you have installed both files.
It is common that install fails on the OBB file install with this error
Pavlov: Shack - Failed to transfer file: Error: Command failed: "C:\Users\selim\AppData\Roaming\SideQuest\platform-tools\adb.exe" -s 1WMHH814EN0442 push "C:\Users\selim\AppData\Roaming\SideQuest\main.23.com.vankrupt.pavlov.obb" /sdcard/Android/obb/com.vankrupt.pavlov/main.23.com.vankrupt.pavlov.obb
Ensure you are using a USB2 cable or USB2 port - (if you are using the cable that comes with Quest or a Link cable (USB3), they are known to be unreliable for larger file transfers)
Try a different USB port and/or USB2 cable. A standard cable that comes with a mobile phone will work.
Try to install over wifi by following instructions here: How do I Enable wireless mode? https://sidequestvr.atlassian.net/servicedesk/customer/kb/view/62685397