sync outlook with mail

This Apple support page describes the straightforward method by which you can add an email account to your iPad:

Add an email account to your iPhone, iPad, or iPod touch - Apple Support

Specific guidance for setting-up a Microsoft Outlook email account, using the iPad’s native Mail App, can be found here:

https://support.microsoft.com/en-us/office/set-up-an-outlook-account-in-the-ios-mail-app-b2de2161-cc1d-49ef-9ef9-81acd1c8e234