Follow the instructions for install from this same page from above, further down the page https://pypi.org/project/selenium/

I'm doing, this without python3 or pip3 to see if it works


    cd ~/selenium-projects


    python -m venv venv


    source venv/bin/activate


    pip install -U selenium

Im using the above but this too is option for latest


    pip install -U --index-url https://test.pypi.org/simple/ --extra-index-url https://pypi.org/simple/ selenium

normal, pip and python worked for above, To check selenium use


    show selenium

**The above didn't work on MAC you need to use


    pip show selenium

it shows that it is located within the venv/lib

start python and run to check


                        python


                        import selenium


                        print(selenium.__version__)