Hi @Andrew101,
Are you measuring CAN_Rx, or CAN_H/L from the bus? Also, if possible, please try testing the project with any CAN interface available. I can see the project successfully returns a frame at 500kbps with the bus status kept at OK.

I can also see from the logic analyzer there are no issues. Could you please check connections, GND, sampling point + voltage threshold (if available) from your analyzer? Also, please check if jumper settings are configured as stated in the S32K3X4EVB-T172 Getting Starded.

Best regards,
Julián