Welcome @sathvika, to the community!
NUCLEO boards are used to develop your own hardware with the respective target MCU and, due to their flexibility, only contain the most necessary functions, such as the debug interface, few LEDs, buttons, crystals, voltage regulators or even an Ethernet PHY. The Terms of Use on the product website state that NUCLEO are not approved for any other use than development, especially not for productive use.
The NUCLEO boards can be supplied with 5V, which is then reduced to the required voltage of usually 3.3V with the aforementioned voltage regulator. As all STM32 can be operated with a maximum of 3.6V, no STM32 can output a voltage of 5V. However, you are free to develop the necessary peripherals via which the respective STM32 can control the external 5V, e.g. high-side or low-side drivers or even simple MOSFETs.
Hope that helps?
Good luck!
/Peter
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