Both vb.net and C# compile to the same bytecode. So fundamentally, if you code for a hobby or are a lone coder, it's down to what you prefer (I prefer vb.net over C#), however organisations made it clear early on that C# was much preferred so that's what prevailed.

If I'm quickly knocking up a small GUI utility then the drag-drop building nature of a vb.net forms app is a real time saver - but in contrast you have more flexibility if you build controls via code like C# does.... horses for courses really.

Bizarrely, I've recently started exploring using C# as a CGI back-end via .NET core on Linux... for the simple reason that I can. Apparently it can be quite performant.