1. I believe that 'craps' is the name of a gambling game, played with two dice. Rolling 7, with two die (which is the plural of dice) is very lucky and a win.
'Making the light at the intersection every day, all week'; that means that one keeps driving through green traffic lights (green = go) and if it happens each time every day of the week; again that's extremely lucky.
2. 'Nevertheless' means in spite of/regardless. No matter what you do, the outcome will be the same.
3. 'Making a monkey out of all of us' is an idiom meaning to make a fool of someone.
Hope the above is helpful,