Visual Studio automatically assigning Misc. category insted of Assembly-CSharp so scripts don't work properly

So freaking annoying and I can't find a fix anywhere.

If I save the script it's going to show a bunch of errors in the editor. I don't know why this is even happening, I didn't change any settings or anything, just tried to make a new script and bam. I am sorry if this is something simple I'm missing, anyways thank you in advance.