In our climate (zone 7b) we have gotten fruit the second year, but not much and not the best. The quality and quantity of fruit greatly increases as the tree matures, but by year three you will probably get some decent fruit I would think.
If you are protecting the plants over winter you may speed the process some, but for us the benefit is not worth the cost. We grow all our trees in ground and they do fine after the first few years. They almost always freeze back to the ground the first year or two, but don't panic. They also almost always come back from the roots stronger and larger each year until there is a good strong root system and a hardwood base to grow from.
We grow all organic, so I would suggest that one of the best things you could do is to assure that your figs have good healthy soil with lots of organic matter and that they are mulched well. We are trying lots of new varieties (and will have to wait and see what happens with these) but with our older figs, it tooks some patience the first few years, but once they settled into the location and climate they have been strong and produced well almost every year. The worst thing that happens is some years it gets warm and the figs leaf out, and then we get a late hard freeze which can severly damage the figs, but they survive that too.
Bottom line: With some good common sense care, and a good location with lots of sun and good soil, you can't go wrong. In a few years you will have some outstanding figs and lots of fun in the process.
Best wishes.
John
Georgia Piedmont
Zone 7b