Hi @Tran, Nguyen Thank you for posting the question on this forum.
Unfortunately, managed identity/Service Principal authentication is not supported for SharePoint connector. It only connects using credentials. There is a feedback item opened by the users on a similar ask in the past. Here is the link to the feedback request Kindly upvote the feedback request.
As an alternative in the meantime, you can try to call the SharePoint API using a HTTP trigger. Please refer a sample implementation provided in this article
If the response helped, please do click Accept Answer and Yes for the answer provided. Doing so would help other community members with similar issue identify the solution. I highly appreciate your contribution to the community.