If it dropped in clumps, that could cause a problem, because it could lead to nitrogen burn where it was applied too heavily.

DO NOT TRIM, the leaves might be dead but the branches are not, they appear to be fine. The branches, including the leader will send out new leaves. Just plant in ground and watch during spring. If a tree big or small gets too little water or in your case probably overheated (because you watered) it will protect itself and lose its leaves kinda like it's fall. My guess is the soil and pot got too hot, and you might have even scorched it by watering it when it was so hot, instead of allowing the pot to cool down first. Just plant in ground in fall first, then wait till spring to see what branches leaf out, then if you like trim the ones that didn't. If you want, you could mist the branches that have brown leaves on them just to keep them moist till the first frost.

I bought a new house last year I have a Fig tree in my back yard last year it was a lot of leaves and Figs today its already June 16 I don't see a singleLeave on my tree does this mean that is dying I live in New York City

You have beavers! {LOL}. Sorry. I really don't know. Is there any chance that you can plant it soon, and bury that part of the stem? Linda