Technically, yes, it’s possible to raise your score by 100 points overnight—but it’s very unlikely. Realistically, the odds of getting an immediate 100-point credit score increase are very slim.
There are things you can do to raise your credit score by 100 points in the medium-to-long term, but they probably won’t take effect overnight. Similarly, while there are things you can do to raise your score immediately, it’ll be by a much smaller amount.