It has one meaning. It means: "at the moment". at the moment = for now

The phrase "at the moment" refers to a period of time, usually associated with the present, as in "right now". For Example: "I am busy at the moment, but in about an hour I'll be free to help you." In this sentence, the subject is stating that at that given period of time, he/she is busy. Another use of the phrase would be when indicating the the brief moment of an event or activity. Ex: "At the moment of his death, his eyes closed."