Ok, So this time i went into the Host Linux Machine (not VBox) and typed what you said into the CLI but got nothing returning so i re-did it using sudo and still nothing returned but VBox came on the GUI software package manager on the Host which is mintOS 20.1.If you're not in the Linux machine, where did run that command in then? You're supposed to run that command in the host OS VBox is installed in, not in the guest, did you do that?. As for the screenshots, launch VBox - not the virtual machine - select the virtual machine and click in settings - the gear icon - in VBox main window, you should get something like this
Take some screenshots for general, system and display settings, then post them here.
Yes, I do. Honestly though, I only run a Windows 7 VM and not sure about trackpad scroll functioning. For Linux guests I prefer QEMU https://www.qemu.org/ which in my opinion is a lot better than VBox for running Linux. And again, you should consider asking in VBox forum https://forums.virtualbox.org/ as they are the people behind this software, and you should expect them to have far more knowledge on how the inner workings of their software than any of us here.
If i have confused you, i be clear, my host is linux mintOS 20.1 the same as the VBox guest OS im talking about.