How long will I survive? 5 wheel spokes missing What do you think, guys? Or should not I try it at all?
Nope. Don't ride it. It's hosed. You risk catastrophic failure riding this wheel, Other spokes will snap soon due to more load put on them and uneven tension. That is if it's even true enough to not rub the brakes or chainstays.

You could replace the broken spokes and have a working wheel if your rim wasn't damaged severly like it appears to be. If you've rode on this for a while, there is a chance that the existing spokes are over stressed and should be replaced as well. I would rebuild the wheel with new spokes and rim if it was my bike.