I am trying to create an organization (not project) private nuget feed in azure pipelines but there is no such option. I can create nuget feed on a project but not on organization level. How do I enable this option?
When you create the feed on a project, you can define who can access this feed. For your case you should select organization. Then you can use this feed from other projects inside the same organization.
From another project you will be able to access this feed.