The question you seem to be forming is "How often does he phone you?" This is
a common English question structure where "how often" asks about frequency,
"does he" is the auxiliary and subject, "phone" is the verb, and "you" is the
object. The correct word order for this question is:
How often does he phone you? This asks someone about the frequency with
which "he" calls or contacts them by phone.
If you'd like, I can also explain how to use "phone" in sentences or the difference between "phone me" and "call me." Let me know!
