What is the ruling of the Shari'ah on female groups that sing at weddings for exorbitant amounts of money, while sometimes being in a state of unconsciousness, and what is the ruling on those who listen to them in women's gatherings?

The questioner did not specify the type of singing. However, singing that includes obscene or provocative words, or that is accompanied by musical instruments and music, is forbidden. The duff (tambourine) is an exception for women, provided certain conditions are met. If the female singers drink alcohol and become intoxicated, this is a grave evil. They should be advised, or their matter should be reported to authorities to prevent them, and it is impermissible to bring them in, as that constitutes aiding in evil. Money should be spent on what brings one closer to Allah, not on forbidden things.