Can american citizens get a china visa in Macau?? And have it Rush service?

Dwain, according to the authorities, those who don't have resident status in Macau can't apply. However, people from certain countries like US, UK and other developed countries still have a chance to apply successfully. So you can give it a shot.

Yes, there is rush service, which allows you to pick up on the second working day. It asks for extra MOP 300. Of course, you need to get the permission from the consular officer if you plan to use this service.