How to open a social security certificate for three months?

The social security certificate can be opened by itself. Go to the social security center to print. Or you have your own printer or go to a printing agency to log in to your social security account and enter the self-service printing page for printing. If you haven't paid social security, you can't print it.

Further reading: How to buy insurance, which is good, and teach you how to avoid these "pits" of insurance.