In the absence of official numbers of Microsoft, Xbox Series X/S hardware sales have been the near-exclusive domain of speculation and estimates, though we do often get semi-official updates nonetheless.
For instance, in its quarterly earnings report, Take-Two Interactive has stated that PS5 and Xbox Series X/S are estimated to have cumulatively sold over 94 million units worldwide as of November 2024.
Based on officially revealed PS5 sales figures, that gives us an idea of where Microsoft’s current-gen hardware sales stand.
As of September 30, the PS5 had sold over 65.5 million units worldwide. One would assume that it will have sold another couple of million units during the month of October (given that the final quarter of every year is usually PlayStation’s strongest).
That would mean roughly 67-69 million units of the 94+ reported by Take-Two belong to PS5, which in turn would indicate that Xbox Series X/S sales stand at somewhere between 27-29 million units as of November.