Kindly reference the following link(s):
Is Cupping (Hijama) a form of worship? | Sheikh Assim Al Hakeem
Ruling on cupping in Ramadan | Sheikh Assim Al Hakeem
Is money of the one who does cupping halal | Shaykh Assim Al Hakeem
Benefits of Hijama / Cupping (17th, 19th or 21st of Islamic Lunar Month)