"When will you come to meet me?"
Translation:तुम मुझसे मिलने कब आओगे?
Generally, Hindi has the subject first then the object (if there is one), and lastly the verb in a sentence. Because तुम is the subject, it would come first. If you were to say the sentence in the order that you stated, Hindi speakers would most likely understand you, but it is not the proper word order.