I'm really sorry to ask this. My first truck was a '14 ram 1500 limited. It had air suspension and would lift the truck up or down with a button in the interior. With my f150 limited it doesn't have that and I'm a wee bit concerned im going to take out the roof in some of the garages here in Cali.
Uhm, what does leveling do? Lower the truck a few inches?

 

Leveling should raise the truck in the front about 2.5 inches.

 

Leveling is usually done with spacers over the front struts to raise the front end to eliminate the rake a stock truck has.

If you have a 4WD you can remove the rear lift blocks to drop the rear closer to level but its not likely to adjust the overall height of the cab by a huge amount. The blocks are around 1.25" so it might lower the high point of the cab by 3/4".