First time with a MacBook. Can you help me?

Hi,

I'm trying to transfer my PC data to my new MacBook. First time with a MacBook. I did try using the article that already exists, but unfortunately when trying to download it gives me an error message: This XML file does not appear to have any style information associated with it. The document tree is shown below.

<Error>

<Code>AccessDenied</Code>

<Message>Access Denied</Message>

<RequestId>7954870C04N8KBBT</RequestId>

<HostId>gRPhNcsoy/Y5HomxnKXWIkJ5gDmpMlkeWkXdBqmOjVTJqRxUDPKO2Qmt7BC1F64TqdcQyiZpgrc=</HostId>

</Error>

Idk what to do from here.