We do not currently provide support for Azure DevOps on this site. Please use their official support channel for assistance.
While you are waiting on them to help you I will point you to the official MS docs on how to CD to SharePoint available here. Note that it is focused on the SharePoint Framework but if you read the CD portion of the article it tells you how to deploy files to SharePoint via DevOps. Post in their support channel if you have further questions related to this.