Usually for a new Apple user the way to setup your Apple ID (new) is to go system settings and then Apple ID is at the top.

anything and everything related to your Mac, from the basic setup to the advance user its all here at macuser
Usually for a new Apple user the way to setup your Apple ID (new) is to go system settings and then Apple ID is at the top.
Hey there, Mac users! Today, we’re diving into a quick and easy tutorial on how to fix your user account profile. Whether you’re updating for a fresh start or just personalizing your device, we’ve got you covered!”
Changing your corrupted profile account is simple, but it’s important to follow the steps carefully to avoid any hiccups. So, let’s get started and make your Mac truly yours!
Grab your mouse, and let’s jump into the system preferences!
When you setup a Watchguard VPN using IKEv2 you will need to download the installer for file to setup the profile for your computer or smart phone. The Watchguard includes it all within a package build. It’s a zip file you just need to unzip it and then located the folder to the Operating System you are using. So in our case you open the MacOS_IOS folder and either double click or right click and install the WG IKEv2.mobileconfig profile.