Script editor in Premiere Pro
Unfortunatley no. Adobe Premiere dropped what would have been your best possible “tool” when CC replaced CS6. 

CS6 has a tool called Analyze Speech, used primarily for automated transcribing. 

This tool could be used to substitute a rolling message box within the MetaData Window, tied to Key Frames. So you could use it manually in that sense to drop in a script and change the timings. 

Your Best Bet is to either use basic slates/titles using the titler window. You could try playing with the rolling title feature, making a single rolling slate the length of your program... Or just block it out. 

I do a ton of VO heavy productions however, and have never really thought of this as being an issue, even with CS6. 

Not sure what your workflow is. But just recording a scratch track of your VO and dropping in temporary slates to indicate the placement of graphics, future media, tittles, etc, should get you there.