I struggled with the same problem for a while, right after upgrading to Windows 10, and even if a little late, it can help others. In my case, this turned out to be the stupidest thing: the script panel was there, but hidden behind the Wacthes and CallStack panels. You just need to go left and squeeze these glasses a little. See photo:
No script: 
Script panel was hidden !: 
In addition, other actions that I did before I noticed:
- I turned on the script debugging (Internet options> Advanced> In the "View" section, uncheck the "Disable script debugging" box). <= This is really necessary for actual debugging as soon as you return to the script panel.
- Disable IE11 and enable it again.
- Reset defaults, etc.
But nothing made the panel look, just so stupid to fix it so easily. I hope the same for you!
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