Are you able to access the dashboard for polyglot? Assuming so, can you find the plugins store? Assuming so, can you find the plugin for Govee? Once found, do you see how to install the plugin?
Also, in the store listing for each plugin I would expect a "more info" option. From there you will often find some very basic instructions relevant to each plugin. For Govee, it takes you here:
https://github.com/UniversalDevicesInc-PG3/udi-govee-nodeserver/blob/main/README.md
Once installed and set up, mine found the three Govee devices that I have and once found, the IoX showed the Govee devices as nodes, which can be used like the Insteon or zwave nodes in programs and scenes (with some limitations).
Hopefully, along with the response from @dbuss, this will get you started.