How can I heal athletes foot asap?

Various ways. Firstly, since excessive perspiration and moisture is the cause, keeping feet dry is a must. Wear socks that absorb moisture and change often. Let feet air out when possible. Dry thoroughly after bathing. Powder in shoes can also be helpful. Additionally, topical anti-fungal creams, solutions or sprays may be needed. If a prolonged problem, see a podiatrist.