Did I have USB debugging on or off?

my phone got stolen a month ago and I Don’t know if I had usb debugging on or off(I had enabled developer options in the past and messed around with it a little bit that’s why I’m not sure) but I remember,everytime I connected my phone to the computer I had to unlock the phone using my pin and select files or photos in the notification bar to access the files on the phone,otherwise you couldn’t Mount phone as a storage device.i never had anything on the notification bar that said USB debugging is enabled when my phone was connected to the Computer. Did I have USB debugging on or off? and if I had USB debugging on could they simply remove the PIN and use the phone as is? I’m worried about my chrome data not about videos photos… Thanks alot