Anyone have a guide for different methods of housing pre-built PCBs? Should I just cover the board in clear epoxy?

Ive been looking at listings for USB charging interface boards, fast charging triggers, etc. Here's an example:

[type c 65W charging interface screenshot](https://i.imgur.com/2rF5a5f.png)

Is there a general rule of thumb for how to house/enclose a board like this? I know that i could heat shrink a PVC tube around it, or perhaps coat the board in clear epoxy, but is there a more skilled approach I could take here?

Thanks for the help, I'm new at this.