Hi Pooja,
I see you allocated CAN pins correctly but you didn't set any CAN configuration at all!
For SPC58EC, the CAN peripheral map is the following:

I've highlighted 2 rows, indicating for example CAN peripherals actually wired on our AEK-MCU-C4MLIT1 evaluation board.
I suggest you check this AutoDevKit example: "SPC58ECxx_RLA CAN Test Application for DiscoveryPlus" which explains how to use CAN protocol in AutoDevKit Studio.
Best regards,
Simone
AEK_Team