VFDs are fairly power hungry, requiring about 2.5W of power to run. The more 'pixels' that are lit, the more power it uses so be sure to power your project from a wall adapter. Using this display for a battery-powered project isn't going to be easy.

Power is 5VDC, onboard is a boost converter for the VFD's 60V so you don't need to supply that. Do be careful to not touch the high voltage parts when the display is powered. The best way to handle the display is to keep it powered off while touching it and then only turn it on when it's mounted or attached to the box you intend to use.