What is the meaning of the idiom "to hit the jackpot"?

to enter into a dispute to get into a difficult situation to have a big success to face roadblock

to have a big success

The correct answer is to have a big success. The other options are: to enter into a dispute : This is not the meaning of the idiom. to get into a difficult situation : This is not the meaning of the idiom. to face roadblock : This is not the meaning of the idiom.