The resource at
provide you an overview of the integration options OneNote provides. In short OneNote supports LTI 1.0 Basic Launch meaning the level of integration with any LMS is very low, and out of date. This is not an aspect of the integration D2L has any control over.
The following video https://www.youtube.com/watch?v=bsknNyom1Qc covers the steps to integrate OneNote with Brightspace.
If your institution is interested in a more functional/feature rich integration with OneNote and other Microsoft products/services such as MS Teams, please contact your D2L Account Manager who can provide information regarding additional options available to you.
Hope that helps!