Is this a tourist visa? This means nothing in terms of employment. You will need to be sponsored for a work visa, which is quite different from a tourist visa or even a student visa.
As @blossom said:
Unless you have demonstrated financial need and you get accepted by a college that meets full financial need for international students, $50k isn’t going to be sufficient. The “top colleges” cost almost twice as much.
All this isn’t meant to discourage you, but rather to help set the right expectations.