The US NOs for Global 40 go like this:
$10 for US control of Eastern US, Central US and Western US
$ 5 for US control of Mexico, SE Mexico, Central America and the West Indies
$ 5 for US control of Alaska, Aleutian Islands, Hawaiian Islands, Johnston Island and Line Island
$ 5 for US control of the Philippines
$ 5 for 1 US land unit in France
So, all added up the US could make $30 in NO money. However, if the US can collect on the last one, it’s pretty much game over for the Axis in Europe. Also, if the US can collect on the Philippines for more than one or two rounds, that usually means Japan is on the way down.