I'm a little leery of folks who come up with predictions — so far, almost all of them wrong — about when the virus will be under enough control that our world can become more like it used to be. I think it's better to not keep naming dates and then watching in disappointment as they pass or become less likely.
That said, I'm going to cautiously link to this piece in which Dr. Anthony Fauci — the closest thing we seem to have to a public figure who knows what's going on — says that "some time in the fall of 2021, performing arts centers may be able to reopen, providing certain precautions are taken."
There are a lot of IFs in this piece like "…if vaccine distribution succeeded, theaters with good ventilation and proper air filters might not need to place many restrictions for performances by the fall — except asking their audience members to wear masks, which he suggested could continue to be a norm for some time." It would be nice to think that will happen. I hope, I hope, I hope.