Why my apples had no fruit for the last 2 Years?

They may need more iron and other minerals. You can buy tree stakes to put in the ground under the tree to help. See nursery or department store that sells nursery items. Be sure to buy the type that specifically lists apple trees or fruit trees. Follow the directions to put them in the ground. It is easy, it is just important not to be too close or far away from the roots. That should help. Be sure your trees get enough water, even in the winter on days it is not freezing if it has not snowed or rained. When they do produce fruit they need more water.

https://www.gardeningknowhow.com/edible/fruits/apples/no-fruit-on-apple-trees.htm

I've had the same problem. There was the white flowers, just no apples.

If you are getting flowers and no fruit it maybe you need another tree. Some trees require a cross to produce. Another missing item might be that it flowered before the pollinators (bees etc.) were flying or there was a cold snap. Some early warm periods will throw off the cycle. The flowers come out, the bees do their job and zap there's a freeze. The flowers fall taking the possible fruit along.

If it's not flowering and you've been fertilizing etc. It may be you are using a fertilizer that is too heavy on nitrogen. Nitrogen produces green growth but can delay flowering. Last but not least, your tree just might not be old enough. Some plants don't bloom until they are several years old. I don't know if this is true of apples but it is something to consider. You may just need another year before it produces fruit.

perhaps they did not get pollinated. Bees are becoming scarce. Try planting something to attract bees To the area

http://homeguides.sfgate.com/apple-trees-dont-produce-fruit-55638.html