IT simply isn't conceivable for FAB to do an issue on British fellows making good in The States without mentioning Herman.     Herman's got a little niche for himself in America, and it looks like it's his for good. And he seems to make so many trips there we suspect he's got a transatlantic season ticket!     Herman's just back from a forty-city State tour, but there's still somewhere in America he hasn't visited, and he's putting that right this winter. The group take off for their first ever trip to Latin America, opening in Brazil on November 17th for ten days of club, concert and TV dates.     Then they move on to a concert date in Mexico City and top that with a week in Puerto Rico.     After that it's back to Britain, but they do "drop in" on New York to appear in the Jerry Lewis TV Show. All right for some, isn't it?