In my project folder I created venv folder.
python -m venv venv
When I in VS Code run command select python interpreter my ven
I had the same problem and the solution was pretty easy:
"If you create a new conda environment while VS Code is running, use the Reload Window command to refresh the environment list shown with Python: Select Interpreter; otherwise you may not see the environment there. It might take a short time to appear; if you don't see it at first, wait 15 seconds then try using the command again."
That's written on Vscode site
Note: to Reload Window: ctrl+shift+p in Vscode, then write reload window