Unfortunately, this is a very broad question and difficult to answer in a single community post. However, there is a lot of content on our Dataiku Academy, Knowledge Base, Documentation, and Tutorials that would be help you better understand how you can build a pipeline in DSS. You may also find the following content about building a data pipeline in DSS useful:
To answer your specific question though, you would want to start by building your pipeline by creating a project on your Design node and building an appropriate Flow. I hope this gets you started in the right direction!