Hi my name is bhanu I want my son to come over fast can I file visiter visa and than do adjust the status to green card .

No. Your son cannot use a visitor visa to enter the country when his intent is to remain permanently. You need to file an immigrant visa petition to bring your son to this country. Your son will need to wait his turn to immigrate. You can read more about family immigration at http://myattorneyusa.com/family-immigration.