You don’t. There is no “into” with a venv.
A venv is not something physical and not organizational.
Technically, it’s a set of environment variables that are set in a parent process that identifies what instance of Python to use when you run your code.
Also see Virtual environment setup for django and the three links in the first reply.
You should also read 12. Virtual Environments and Packages — Python 3.12.0 documentation and venv — Creation of virtual environments — Python 3.12.0 documentation