Hey Mannydaman,
It sounds like you're looking for help getting data transferred from an old Mac to a new Mac. We can understand wanting to look into that further. We want to help.
They would have a few options available for assistance on transferring their data. They can follow the steps in this article: Move your content to a new Mac
Depending on the country they are located in, they may also have support options available over the phone or through chat where an Apple Advisor can walk them through the process here: Get Support
If they prefer assistance via in store service, they would need to schedule an appointment.
Thanks!