To run this project you need to install python 3 and add it to your path, there should be plenty of information on how to do this on the internet.
When you have python ready, consider making a virtual environment.
Run the command pip install -r requirements.txt
in a terminal in the root directory of the project
to install all the necessary dependencies of the project.
Finally execute the command python3 manage.py runserver
and follow the on screen instructions.