You wait 24-48 hrs for a number to be generated, then come back to the SSA office and ask for a printout, idk about Texas but I know Missouri accepts these to expedite DLs
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Filed by: Myself| Package sent: 07/28/2014 Lewisville,TX | Delivered: 07/29/2014| G1145 Notification: 08/04/2014| I-797C: 08/08/2014 Biometrics: 08/18/2014 for 08/26/2014 | Approved: N/A| EAD Sent: N/A |