I am trying
scp -r usernameipaddress:/path /pathwhereIwanttocopy
The -r flag should work. In your example you seem to be forgetting the name of the folder you want to copy. Try:
scp -r nameOfFolderToCopy username@ipaddress:/path/to/copy/
to copy a folder from your local computer to a remote one. Or
scp -r username@ipaddress:/path/of/folder/to/copy /target/local/directory
to copy a folder from a remote machine to your local one.