He has not counted time, since he arrived in whatever time and place he is.
He has not attempted to re-enter the Void - he can cross it but with his ship in this condition he can't navigate it. Even if he could find his way back to the Time War, there is no part of it that still lies within his future except whatever incomprehensible event was about to end it, when he ran; and returning to his past, he is now sure, would be futile. There is only him, and the Voidship, and the last Progenitor. It is up to him, the last survivor of the Cult of Skaro, to decide what a Dalek is, now.
He travels, for a long time, at sublight speeds, through the darkness.
He allows a small pale star to catch him in an orbit. He hopes it is interesting enough for someone to investigate, someday.
The Voidship will appear as a small sphere, a perfect blackbody a few meters across, absorbing all radiation and emitting nothing except a transmission of prime numbers.