Depois de usar o activate.bat nao esta aparecendo o (venv) esta certo?
PS C:\Users\Julio Silva\Desktop\ALURA\Python-Back-End> python -m venv venv
PS C:\Users\Julio Silva\Desktop\ALURA\Python-Back-End> venv/Scripts/activate.bat
PS C:\Users\Julio Silva\Desktop\ALURA\Python-Back-End>