In your terminal go to the folfer where you want to add this app and run git clone git@github.com:Anne-Anq/girls-connect-world.git
Once done go into that directory cd girls-connect-world
Install all the dependencies with npm i from the root of this new folder. Then cd functions to also install firebase functions dependencies and npm i again. And go back cd ...
In /src folder add a config files withe the configuration content. Make sure to never push that file!! It is and should remain in.gitignore.
You should now be able to see the app locally by running npm start