So I am using VSCode Insiders to connect via SSH to my Ubuntu Server where I have all my project clones. Everything up to here works so far. I am doing a bit of pandas/matplotlib in python and say, I wanted to plot a graph and see it. Is it possible to do this?
In order to view graphical linux applications over SSH, you need to do a couple of things. First of all, you need to make sure that your Ubuntu Server is running an X windows server so the system knows how to process GUI events. Once you've verified this, you need to configure your SSH client to communicate with the X windows server. This will vary based on your host operating system and the SSH client you're using.
This guide could be helpful: https://statistics.berkeley.edu/computing/x11-forwarding