It looks to be a couple videos stitched together with techno music laid over top of it, and then titled techno nuns smoking weed.

The videos

Nuns dancing to ska/polka sounding religious music at "World Youth Day"

Nuns dancing to some sort of vanilla electropop song in Poland

Fake nuns not associated with any religious order that use communal living and dressing like nuns as a marketing gimmick to sell CBD in Northern California They are called The Sisters of the Valley. Their website states that they have had to lay off 60% of their staff due to the recent COVID-19, which makes me more suspicious that it is a marketing gimmick. They also say in the ABC video that I linked that they aren't even celibate. I guess they are just into the nun stye of clothing.