By my calculations, it would take more than just raising the top bracket. There'd need to be some increases below that, too. Here's a terrific resource for doing that math:
https://www2.census.gov/programs-surveys/cps/tables/hinc-06/2017/hinc06.xls
That makes it possible to do a rough calculation of the impact of a given change to individual income tax rates. Say, for example, the only change you make is to raise the tax on the top bracket from 37% to 50% and lower the threshold for that from $500k/$600k to just $250k. Right now there are 4.926 million households that earn over $250k, which earn an average of $413,853. So, they earn an average of $163,853 in the top bracket. Multiply by 4.926 million and you get around $807 billion in extra revenues.
Obviously, if we just raised that top bracket without lowering the threshold, the revenue boost would be a lot smaller than that. Only about 0.5% of households earn over $600k:
https://dqydj.com/household-income-percentile-calculator-2016/
So that top bracket only captures 631,120 households or so. We're not going to reach balance, from a starting point of a planned trillion dollar deficit, merely by raising the top bracket. Restoring corporate effective tax rates to reasonable levels would help, but I think it'll take more than that.