Nightclubs in GTA Online are businesses included in the game as a part of the After Hours update. Any of the ten clubs can be purchased at the Maze Bank Foreclosures website.
This is the easiest daily objective. To complete it, you need GTA$1000 and at least one more player in Freemode. Call Lamar and select the only available option in the menu — “Call Mugger”. After that, select any player from the list and the daily objective will be completed.