Meaning, what were Japan's aims if it had been "successful".
I ask this assuming there was some military objective and it was not just intended as a one-time sneak attack intended to "scare" the US and hope they would not retaliate in a major way....unless the answer is that simple.
Quite the opposite. As far as Japan was concerned, they'd run into war with the US either way, and thus the fleet had to be taken care of. More can always be said on the matter of Japanese wargoals for the Pacific War, so if you reading this requisite piece of boilerplate, yes, YOU, want to make a post of your own, don't let my linkdrop stop you!
From the Japanese Kantai kessen doctrinal perspective the objective was to operationally weaken the USN so they could not interfere with concurrent IJN operations or the USN would be weakened to the point that if they sortied IAW the Plan Orange battle plan, the IJN would have operational and tactical superiority, leading to the Mahanian ‘decisive battle’ and a IJN victory.
The Japanese strategic perspective a complete operational success was sinking all of the USN capital ships in harbour, more battleships since Mahanian doctrinal thinking still prevalent in all navies ascribed these ships as the main arbiters of naval power, carriers were still an unknown quantity, though Yamamoto assigned a high priority to the carriers too.
The Japanese military government (mis) calculated in that they believed the removal of the battle fleet in conjunction with a rapid series of victories in SE Asia would demoralise the US to the point the US would try to negotiate a peace deal. They failed to understand that initiating hostilities in this way (also given how they kept their diplomats in the dark and the formal declaration of war arrived after the attack) would infuriate the US.
The Japanese strategic objective was to seize the strategic resources they needed in SE Asia and prosecute the war vs China. Operationally the objective was the above and create a bastion perimeter they could defend.