Hi @manibharathi,
Sorry for the late reply.
RTD 3.0.0 is already the latest version for the S32K1 drivers. I assume you already have them installed, if not, please refer to the attached document (Getting Started with the Real Time Drivers (RTD).pdf).
I recommend checking our list of HOWTOs: S32DS - list of HOWTOs.
It shows how to create a new project from example, scratch, how to create a LED blinky example, with and without AUTOSAR layer.
There are also some examples inside the RTD package. Specifically, Dio_Example and Gpio_Dio_Ip_Example projects configure a LED output in the board.

Lastly, you can also refer to the RTD training presentation for Pins and Clocks: S32K3XX Pins and Clocks with RTD. It is based on S32K3XX, however, functionality is very similar.
If you have any issues configuring pinout or with code, please let me know.
Best regards,
Julián