A startup claims to have achieved a 1,180 qubits quantum computer (based on nuclear spin tech), allegedly with long (40s!) coherence and the ability to run quantum algorithms. I wonder if anybody tested it independently. https://atom-computing.com/wp-content/uploads/2022/08/Atom-Computing-Atomic-Arrays.pdf
What also matters is the speed at which they can perform operations on those qubits, and which pairs of them can be made to interact (there are some setups where only adjacent ones can, for some graph -- IIRC most/all trapped ion setups were like that some time ago).