you are setting up icloud on the Macbook and because you have 2 step verification the macbook is asking for your iphone passcode in order to verify its you logging into icloud
do you have an iphone ????
has it sent a code to the iphone
https://support.apple.com/en-us/HT204915
do you have an iphone ????
has it sent a code to the iphone
https://support.apple.com/en-us/HT204915
