Hi,
ok, you are referring to SDK examples. Those should work with the board, refer to example description in S32DS installation
C:/NXP/S32DS_Power_v2.1/S32DS/software/S32_SDK_S32PA_RTM_3.0.3/doc/html_MPC5748G/usb_msd_fatfs_mpc5748g_group.html
C:/NXP/S32DS_Power_v2.1/S32DS/software/S32_SDK_S32PA_RTM_3.0.3/doc/html_MPC5748G/usb_cdc_lwip_mpc5748g_group.html
BR, Petr