For the full edition vulnerability scanning kit it shows IP license. what is the license for the scanner, or the network to scan?

? If use by a consultant, would i be able to scan multiple networks, one at at time, or only the one network. unless i have a higher IP license?

It means only concurrent scans.
So if you have a 1 IP license you can still scan 256 IPs it will just do 1 at a time and queue the rest.
When it finish 1 it will do the next.
If you have a 8 IP license it will do 8 at a time.

You are allowed to change the IP and do all the scans you like.