Fujifilm X100V has a 26.0MP APS-C
(23.5 x 15.6 mm ) sized BSI-CMOS sensor and features X-Processor Pro 4 processor. On the other hand, Fujifilm X100T has a 16.0MP APS-C
(23.6 x 15.8 mm ) sized CMOS X-TRANS II sensor and features EXR Processor II processor.
Fujifilm X100V's sensor provides 10MP more than Fujifilm X100T's sensor, which gives a significant advantage in real life. You can print your images larger or crop more freely.
On the other hand, please keep in mind that Max sensor resolution is not the only determinant of resolving power. Factors such as the optical elements, low pass filter, pixel size and sensor technology also affects the final resolution of the captured image.
Another difference between these two cameras is that Fujifilm X100V's sensor lacks anti-alias (Low-Pass) filter. Removing anti-alias filter increases the sharpness and level of detail but at the same time, it increases the chance of moiré occurring in certain scenes.
Below you can see the X100V and X100T sensor size comparison.
Fujifilm X100V and Fujifilm X100T have almost the same sensor size, so neither of them has any significant advantage over the other in terms of providing control over depth of field when used with the same focal length and aperture.