Hi GaryDK43,
Welcome to the Apple Community.
Apple support has info online (links below) that may help.
How to transfer data from your old Mac to a new Mac using Migration Assistant:
Move your content to a new Mac - Apple Support
moves all of your documents, apps, user accounts, and settings to a new Mac from another computer.
How to: Restore your Mac from a backup – Apple Support
uses that backup to restore your personal files, including apps and everything in your user account.
Or
Restore items backed up with Time Machine on Mac – Apple Support
How to restore just a few files or earlier versions of those files using Time Machine.
5 min video shows the whole Migration Assistant
How to transfer data from your old Mac to a new Mac using Migration Assistant:
https://www.youtube.com/watch?v=24IgIZrGYkw
All the best :-)