Hello @Nour123 and welcome to the ST community
For the Connection issue, I suggest you connect to Cube Programmer throw UART as mentioned on the chapter 7.12 of the UM3345 and mass erase you MCU then reconnect it throw CubeIDE. It should work. For the compilation issue, it will be solved soon. For now as a workaround, compile the project based on the STME32WB0. After that compile another project and recompile your STM32WB0 project. This time it should be working fine with this workaround.
Best Regards.
STTwo-32
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