Microsoft project management software used to plan, manage, and communicate a project schedule and other information among workgroup members, project managers, and other stakeholders.
Ricardo --
If you are using Project Server, I believe you should be able to extract the comments from the Reporting database, using a tool such as SQL Reporting Services or Power BI. If you are using Project Online, I believe you can extract the comments using the oData connection to the database using Microsoft Excel or Power BI. I cannot give you the specifics on where to locate the comments data, but my assumption is that it would be part of the Timesheet data. Hope this points you in the right direction.