How long it takes for ead after i140?

If you applied for EAD simultaneously with green card application, it takes around 4 months. After receiving EAD, you take your immigration paperwork & EAD to the Social Security Administration office to apply for a Social Security card. That takes about 4 weeks to receive. Then you can start looking for a job. With over 31 million Americans looking for work now, and a real unemployment rate of 22.6%, don't expect to find anything anytime soon. Jobs are very scarce. Massive glut of labor in the US. The number of people with jobs now is back to 1998 levels, yet population has increased massively.