Hi Ankita,
You can start by adding this Sharepoint marketplace module into your project: https://marketplace.mendix.com/link/component/119305
However, every integration has its own challenges in authentication and configuration. Go through this learning path to learn how to import and export data into your app: https://academy.mendix.com/link/paths/44/Importing-and-Exporting-Your-Data
Best Regards,
Peter