Kindly note that there are two ways to setup your Gmail with Outlook.
1- please find the instruction of manually set up in the following link (we always recommend use IMAP configuration)
https://support.google.com/mail/answer/7126229?hl=en&rd=1
2- Or you can download and run G Suite Sync Tools in the following Links:
https://tools.google.com/dlpage/gappssync
To use your G Suite accounts on iPhone & Android please find the simple steps in the following link:
https://support.google.com/quickfixes/answer/6252399?hl=en
Do let us know in case of any further queries or doubts.