The form you receive is the acceptance of your petition. Is called NOA1 or Notice Of Action I-797. And is your receipt too. In there you find, case number that have to start with the 3 letters of your service center, your priority date, beneficiary information, your information and the amount of money you paid for the filling of your petition. Now you're in the waiting game of waiting for NOA2 this is the official approval of your petition. You have to find which service center you're at and then go to uscis.gov and find the approximate time for adjudication of I-130 and like that you will have some knowledge when you can get approved.
