Thank you MrChips.It depends on your signal frequency.
Look at the Gain vs Frequency curve (Figure 6) in the data sheet.
And it depends on your supply voltage. The output voltage cannot exceed the supply voltage.
Thank you MrChips,You add dB. Hence two amplifiers of +50dB each would be +100dB which is a gain of 100,000.
10mV x 100,000 = 1000V. You cannot get this from a 12VDC supply.