I do not have a Series X, but on the PS5 Pro I measured a resolution of ~1560P on the Luberation Peak map. The resolution is actually very hard to measure, because they use some fancy anti-aliasing to upscale to 2160P. (So it looks very 4K ish actually). It’s also a dynamic resolution, because it can slightly drop in large combat areas. You can notice that by looking at thin object (electricity cables for example). On the base PS5, the resolution is around ~1120P (same map).
In terms of graphics, the consoles are equivalent to PC highest settings, excepts for the “Local Light & Shadow Quality” and “Sun Shadow Quality”, which are set on High in the PS5 Pro, instead of Ultra. Interestingly, on PC these two shadow setting only demand 2 fps, but make huge difference in shadow quality. DICE can easily use ULTRA on the PS5 Pro. One small difference between the PS5 Pro and base PS5 is the texture draw distance, which is much higher on the PS5 Pro. But overall, the game suffers from lower texture quality on some objects across PC, PS5 and PS5 Pro. Only objects that use photogrammetry have very high texture quality.