Without knowing the details of your media, sequence settings, complexity of edit, effects used, export settings, etc., it's near impossible for us to speculate on your export times.
> I must add I am using a subscription version..would this make any difference?
That's not relevant.
See this page for resources about performance in Premiere Pro (and After Effects):
The media is recordsd in PAL 16:9 format, sequence settings: PAL widescreen. Project includes 23 imported compositions from AE...as for the effects, just simple film dissolves/fade to black/cross dissolve. All in all, a 80min project.