Do you mean N-400? If yes it takes about a month, in some places they do it the same day. For N-600 there is no oath ceremony. Which is it?
This is one of those question that keeps popping up. There is no oath ceremony for N 600. If it is approved, you will get your certificate right the way.
If the question is about n400 naturalization application and process, it depends on jurisdiction. It may take from several days to several weeks. In some jurisdictions, the oath happens on the same day as the successful interview. If the quesiton is about N600, Ms. Bychok is correct.
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