For some reason, after I changed nothing but upgrade to 2019.2.0b1, I can’t open any of my scripts. There’s no error message of any kind, it simply does nothing. I tried switching the script editor but none of them work(visual studio 2015, visual studio 2017, monodevelop).
Well, turns out downgrading back to the stable 2019.1.2f1 did the trick.
You should post problems with Unity betas in their dedicated forum. No one looking at beta issues is going to be looking for them in any other forum.