while logged into remote system(easier to just cd into file location)
sudo scp file_location/file_name user@host:file_location
while logged out of remote system
sudo scp authoried_user@hostname:file_location/file_name new_location_on_local_machine
FOOTNOTE: remember, while logged out of remote systems, if its a new terminal, the first password will be sudo password, 2nd password will be authorized user password.
if you've sudo-ed before in that particular terminal, then its just the authorized user password u need. watch for these, it makes it tricky.