A boyfriend went to jail for a violation and assault he got a bound but he has a holder on him how long should it take for his PO to come see him ?

If you call his PO they can tell you their visitation times/days,etc.. and it'd bring the case to their attention too.. squeaky wheels get greased first.. calling them time and time again may not prove to be a very good idea,but one call won't be.

Sorry, I answered at first for a probation violation, then noticed it was parole.

Very possible depending on the evidence on new charges, he may not be released. He may be held till trial. Or his parole just revoked from the evidence of the new case.