Mine looks a bit different. My version does not give me a scrollbar! Scaling is at recommended and I am not using any other screen access, it is just not providing a scrollbar. Regardless I think there should be a way to remove this?
Do you see My Norton window vertical scroll bar?
Maybe, you'd prefer Classic view
Switch between the My Norton window and Classic view
https://support.norton.com/sp/en/us/home/current/solutions/v135516915