السَّلَامُ عَلَيْكُمْ May Allah bless you is the dhol instrument haram

Yes, the dhol is not permissible. The general ruling on musical instruments (al-ma'azif) is that they are forbidden, and the one instrument excepted from that prohibition is the duff, the open one-sided hand drum, and even the duff is permitted only in limited circumstances such as at weddings and chiefly for the women. The dhol is a type of tabl, a large double-headed drum, and the scholars state that the tabl is not the duff and is not permitted in any circumstance.