Why do I get permission denied when mounting drive as root?

I am trying to mount a USB drive on my Linux computer. But whenever I try to mount it gives me this error:

root@penguin:~/drives# mount /dev/bus/usb/001/002 drive1
mount: /root/drives/drive1: permission denied.

I tried setting the permissions:

chmod 777 drive1

but it kept giving me the error.
I am using Crostini on a chromebook.
Why is this happening and how do I fix it?