Do you know how much should we pay for travel documents? If urgent, where should we go and how can we apply Travel document? Somebody is saying we can get it within minutes from field office if urgent. What does it means? Where is field office to apply urgent Travel document? If urgent we have to show some extra documents. What is extra documents? Do we need to bring extra documents, such as medical report from Nepal? if you have ideas please give me detail information.
Thanks!

Again , yes you can make emergency TPS travel document in the immigration field offices. Print the form , fill it corectly , set the dates correctly- remember that you will have return before the date expires. Just to be on the safe side put 4 months.

It is only for 60 days. If it's serious medical condition it will be approved within 3 hours maximum.

This is what USCIS has to say on expedition of AP: https://www.uscis.gov/forms/expedite-criteria. It specifically mentions that the "The burden is on the applicant or petitioner to demonstrate that one or more of the e​xpedite criteria have been met.​​"

That means any official document that supports your case for expedition of AP will be taken into consideration. Of course, you will need your TPS letter of approval, EAD (if you have one) and any other documentation that you think is relevant.