This is just an environment key, you can set whatever value you want, so if you have Jenkins access already, you can add one as following:
You need to sign up first a project at the following link: https://dashboard.cypress.io/login
Manage Jenkins > Manage Credentials > (globals) > Add Credentials # Select Secret Text and then enter as following Secret = Mv2kFxoKCPtYpz7gFXiTZkFHga7Ou4cp # This key was given by dashboard.cypress.io, you need to go there to get one ID = cypress-example-kitchensink-record-key