Do you think you can be eligible to apply USA as a tourist or a visitor? It's simple...just show the evidences that you have enough funds to travel, professional, social and family ties that support your return to Nepal and the confirmation where you will be visiting.

In my extraordinary analysis, ordinary nepali doesn't get a tourist visa unless it's a miracle.

Anyway, Good Luck. But I've question to you: Why do you want to come here as a visitor? Don't day dream...my friend.