I have the RDVCU5775EVM and I have downloaded the S32 Design Studio but the design studio does not show the MPC5775B. I checked on the website and it directed me to use the MPC5777 but I am not able to get any SDK for that.
Is there any guide which I can follow to start the application development?
SDK you may find within S32 Design Studio:
Getting started documents for this board you may find here, at the very bottom:
https://www.nxp.com/design/designs/mpc5775b-bms-and-vcu-reference-design:RDVCU5775EVM
Actually the getting started document for the board points out to different SDK: