I reposted my Pastor's Fig Tree.  I removed all the old soil and completely replaced it.  Two days later, all the leaves are drooping.  I will see it in a couple of days.

1.  What are the chances the leaves will recover ?
2. Will the leaves eventually drop off ?
3. If they drop off, will new ones grow back in their place ?

My fingers have been crossed.  Thanks

If possible, don't know the size...place a plastic bag that has water sprayed into it and cover. This can keep the humidity up...Good Luck.

It's probably in transplant shock. Completely replacing the soil is a major change in environment for the plant, it can recover or die. Root pruning and repotting is recommended before the plant wakes up from dormancy or in the fall after it dropped all leaves and went to sleep, but you repotted it just after waking up when it's the getting started growing. Put it in shade, water carefully and keep all your fingers crossed, and all toes.

You can try some seaweed concentrate to help with transplant shock and place it in shade. i have repotted 6 fig trees in spring and summer and after repotting i would water them well and them water in with a diluted seaweed concentrate solution. After that i place them in shade for a week and gradually expose them to light and i transition them to full sun after 2-3weeks in hot climate. This way i get a 100% success rate. I don't get much leaf drop but the leaves do droop which is expected. Good luck!

I should have stated that Pastor did not and has never allowed the tree to go dormant. The tree is 6 years old and has never lived anyplace outside his office. You can see pictures in the posr, My Pastor's Fig Tree.

If the leavee fall off, do they grow back ??

If leaves dont recover soon i would pull every lastleaf off. Then roots are less stressed out.

When repotting leafed out growing plants it is better not to disturb the root ball.  Some reports of figs dying after doing this. 
IMO You will probably be OK after the fig recovers (2-3 weeks).  Leaves likely will fall off & new ones regrown.
Suggest put in shade, create high humidity around it & don't overwater or you may get root rot & kill it that way.

As insurance you may want to prune some branches & root the cuttings.  After a major root pruning you need to re-balance the roots & canopy anyway.
good luck & don't worry figs are usually very resilient.

Leaf droop is normal for around 4 weeks after root prune and re-pot. If you lose a few don't worry. It takes roots around 4 weeks to get back to where they were and then around 8 weeks after for the plant to surpass where it was. For the first 1-2 weeks maintain moisture in the root zone. After that ensure the area dries up a little as dryness encourages roots to seek water and grow. 

If you root prune your fig, then you should always have to defoliate or remove all the leaves in the Fig tree. When you disturb the root ball and prune the roots, you have less roots to provide for the same leaves on that tree, that you cause an strees on your tree and it react by dropping the leaves. My best advice to you, cut all the leaves (the longer you leave them, the longer you are stressing your tree), put your tree in shade where it can receive morning sun only. Leave it there until you see that the leaves are growing again and have normal size. Also use a product call SuperThrive, it's the best product available when you repot or root prune. It greatly reduces the shock on the tree. Use 5ml per gallon.
I have repoted and prune roots fig trees and expensive bonsai all year long, including very hot summers without a problem.

I don't think it is necessary to remove all the foliage. The reason the leaves are wilting is that they are releasing water and the root base is unable to supply enough to keep the tree lush. It takes just a few weeks for roots to regrow enough to support the current foliage. In the meantime increase the humidity as much as you can to reduce the amount of water loss the tree experiences. Give it a few weeks and start increasing exposure to the elements as the leaves perk back up.