Completing an immigration form on a client's behalf is regulated activity in California. A person who provides non-legal assistance with immigration matters must be a registered immigration consultant, which carries its own bonding, disclosure and contract requirements, and a notary who is not registered simply may not perform that work. Entering the client's answers onto the form is exactly that work — it involves selecting where information goes and how it is expressed, which is judgment about the form's requirements, and the line between transcription and advice is not one the statute leaves to the notary. This is not a fee question. Doing it for free does not create an exemption, capping the charge does not create one, and having the client review the result afterward does not either, because the prohibited act is performing the service rather than being paid for it. The permissible response is to decline and refer the client to a registered immigration consultant or an attorney.