I want to do a project on bring in external data collected from batching plant IOT to the BIM 360 model of batching plant on forge platform so please guide me regarding it. which language should use and if you guys have already something related to it so please share information with me
This sample app might be helpful: https://github.com/autodesk-platform-services/aps-iot-extensions-demo (live demo). It loads a design file from a specific location (which could be an existing design in BIM360 as well), and adds mocked-up IoT data to it in form of heatmaps, charts, etc.
If you're getting started with Autodesk Platform Services, I would suggest starting with https://tutorials.autodesk.io. As far as programming languages, you can use whatever language that can send HTTP requests, but most of the documentation and tooling we provide is for .NET and Node.js.