Check to see if pin 4 on the TJA1050 chip has a signal that follows the CAN bus signal. If not then the transceiver Rx may be broken.
Check to see if pin 2 on the MCP2515 has the same signal as pin 4 on the TJA1050. If not then there may be a soldering problem.
(The chips are aligned in opposite directions, hence the pin numbering looks strange.)
With these small components you may find it easier to grasp a sewing pin or needle with the oscilloscope probe and then use the sharp tip to make electrical contact with the chip.
