Microsoft has a created a great Powershell extension for VS Code that makes it easy to work with Powershell files. Once the plugin is installed you get intellisense, syntax highlighting, and even visual debugging for files that have a Powershell extension. This debugger can be easily started by pressing F5 when you’re in a Powershell script. Stopping execution on a particular line is as easy as setting a breakpoint by clicking next to a line number.
If you’re coming at debugging from Visual Studio, the VS Code is a little more complicated than what’s in Visual Studio, at least in terms of things to set up first. Once you’ve tried it out a couple of times, though, it’s a pretty convenient experience.