Scott Disick -- I'll Party My Ass Off ... and Make $50K

Scott Disick has taken partying to a whole new level ... and this time its going to line his pockets in a big way.

We found out ... Disick agreed to host a patriotic booze fest July 5th at Harrah's Pool After Dark in Atlantic City ... and will rake in around $50K.

We're told Scott signed the deal last week ... around the same time Kourtney threw him out of their Hamptons house following a nuclear argument over his propensity for partying.