I am using Geany for my Fortran coding, and I like it. It does not explicitly support F#, but it supports C#, so it apparently knows how to work with the CLR. And it has a bunch of plugins available. You might take a look at it and see if it would do the job.Not the idea of starting a flame-war.
I program mostly in F# and Scala.
But no good editor like vscode(plugin) or idea or rider available.
Currently using artix-linux , redcore-linux , mx-linux.