I need to connect by an api an odk form to arc gis and visualize the polygono @Tgh_HQ_Support
ODK Central has a robust API: https://docs.getodk.org/central-api/
And an OData connector that allows you connect a live representation of the data to OData-capable tools. However, I didn't search very hard but the people on this post were not able to find a way to pull an OData source into ArcGIS: https://community.esri.com/t5/arcgis-online-questions/how-to-connect-to-odata-source-in-map-viewer/td-p/1056461
This might be a better question for ArcGIS Support.