What is the destination (rebirth) of a person with Vibhava Tanha?
yes there is not much on Vibhava Tanha in the suttas. The term Vibhava Tanha always appear without any detail.https://suttacentral.net/define/vibhava
Perhaps the closest you get is the dimension of nothing or perception-nonperpcetion like here https://www.accesstoinsight.org/tipitaka/mn/mn.106.than.html

today some people say that Vibhava Tanha was added because puthujjanas managed to think that a lack of bhava Tanha means idolizing suicide, so they countered that with the lack of the formal opposite of bhava tanha, which is Vibhava Tanha...