It means he isnt thinking straight and is in denail i.e not functioning and sorting things out like you expect a grown man to do. It sounds as though he is having a real crisis and his business or job have really fallen apart. he cant deal with it. there must be reasons he had money and now you have none. Not asking.
Obviously I dont know and am only going on the snippets of info you provide. You can always talk to childline and c careers adbiser at the national careers line. You can pop me a pm if you dont know what to do.
Yu have to deal with whats coming as best you can. Other kids manage it and so can you.