you read this ? https://www.bitdefender.com/consumer/support/answer/1446/#accordion-1-t%60

check the uninstaller pkg. with something like Suspicious Package app. It's probably just running a script... pull / adapt that ?

Please refer to this https://www.bitdefender.com/business/support/en/77209-102207-silent-uninstallation-of-password-protected-endpoint-security-for-mac.html

This is the way, check for vendor documentation and use it. Most security tools are fairly simple to remove so long as you have the anti-tamper password, and every one I have seen has a silent way to remove the tool as Security Engieers want to talk to users less than we do

Thanks.