Is on freecodecamp only 12 certification courses present?

How to search for a job after completing the curriculum on freecodecamp?

The same way you always search for a job. You search job sites, network, make a resume, build a portfolio site, interview, etc.

I would add though that it would be good to keep learning and building more complicated things to increase your chances of getting a job.

The purpose of certifications is learning . . .
did you learn ??
It’s time to make
This is the stage before getting a job