To complect your sentence: may be it could be like "How does this New Year treat you ?"

This sentence is either incomplete, or not in right order. I rearranged the sentence and it came up something like this: "The new year treats you." Even then it's incomplete so I assume it should be something like this: "I wish the new year treats you all well/good." It means I hope in this new year, everything goes well with you.

right. One may ask u "How's that new boss treating u?". It means is he nice or strict to u. How's it treating u?, (how's it doing to u?)....

the word "treat" is also a verb and it means "to deal with someone or something" or to handle or to behave. "My teacher treats all of us equally" (my teacher is same to all of us).