How do I know my PIN to use app lock

AVG Protection
3

Hello Kirk,
We are here to help you.
Let us know if your AVG Internet Security application is locked by four digits PIN on your computer or are you talking about AVG Antivirus Pro for Android app lock feature?
Regards,
Alok.

1

When I activate the app lock I am required to enter a PIN. 
However,  I have never been notified of what the four digit PIN actually is,  so I cannot use the facility properly. 

how do I get to know what my PIN i in order to be able to change it?

2

Hello Kirk,
We are here to help you.
Let us know if your AVG Internet Security application is locked by four digits PIN on your computer or are you talking about AVG Antivirus Pro for Android app lock feature?
Regards,
Alok.