I agree with the posters that mentioned the facts about Graf Zeppelin, i.e. especially lack of proper naval aircraft and training, as well as rather small number of aircraft on board, and total lack of torpedo bombers. Furthermore, Germany, without a significant change in strategy much earlier, will be unable to resupply such a task group.
Adding now the superiority of the RN (and, if we are in 1942, USN) in the Atlantic, the result is rather certain. Please note also that a task force of BBs and a CV only is not well balanced, and Germany will not have any DDs with sufficient range to accompany them. You might use some Hipper CAs, but even they are rather short legged.
I think this scenario already has been discussed at least twice in the last three years, but that might have been on the Warships board.
Anyway, to make a long story short, Germany will not be able to change the outcome of the war. The best result possible for the Reich will be that damaged ships retreat to a French or Norwegian port, but the most probable result is loss of at least part of the task force.