Hello @Nitin24 and welcome to STCommunity :),
The STM32L433RC MCU support only Universal serial bus full-speed device interface.
Please refer to RM0394 section 45 Universal serial bus full-speed device interface (USB) and the datasheet.

The STM32L433 MCUs doesn't support the USB HOST mode.
Note that the STM32L4x5/L4x6 devices support USB HOST mode (RM0351)

I recommend you to take a look at this WIKI page Introduction to USB with STM32 - stm32mcu and MOOC - STM32 USB training - YouTube can hep to use the USB.
Thank you.
Kaouthar