The usual confusion with power and energy, mostly unintentional because not understood.
In this case, the panel delivers a maximum current of 2.4 A according to the data sheet. Exactly one hour in full sun will bring 2.4 Ah or 2400 mAh charged. After a good 4 hours, it would then be 10 Ah or 10,000 mAh. You will probably have to buy the corresponding power bank separately. Of course, Ah or mAh is not yet energy, but must be multiplied by the voltage.