Hello @RAleo.1,
Welcome to ST community.
Please try to keep the title as a short description of your request and provide more details in the main question field.
To answer you inquiry, an example for LoRaWAN_End_Node is developed on the NUCLEO-WL55JC and provided in the STM32CubeWL_FW under the following root "STM32Cube_FW_WL\Projects\NUCLEO-WL55JC\Applications\LoRaWAN_FUOTA". You can download it from the ST official website or in the GitHub repository.
I hope my answer has helped you, when your question is answered please close this topic by marking my reply as Best, it will help other find that answer faster.
Thank you.
Chahinez.
