Thank you for writing. That is a pear tree.
Pear Trees have thorns.

This article discusses fruiting.  Excess fertilizing causes the plant to make leave not flowers(fruit).
Frost is a problem.
But the other issue is, do you have a compatible mate to pollinate it. 
https://extension.psu.edu/home-orchards-why-is-there-no-fruit-on-my-tree#:~:text=The%20third%20most%20common%20reason,pears%20the%20larger%20the%20fruit.&text=Therefore%2C%20you%20must%20plant%20two,you%20want%20to%20produce%20fruit

Thank you for writing back.

I do not know of any way to identify the exact species of pear from a picture. The Kieffer Pear is hardy in zone 4 and looks like a universal best bet.

https://arbordayblog.org/treeoftheweek/kieffer-pear-unexpected-delight/#:~:text=Kieffer%20pears%20are%20large%20and,and%20has%20dark%20glossy%20leaves

I hope this helps.