You will have to contact your college in Nepal and the college you are planning to attend in the USA. My guess is that the college in the USA will ask you for your transcript (translated to English if it is in Nepali) and then the registrar's office will determine  how many transfer credits you can get. The number of credits that can be transferred varies by colleges in the USA, so there isn't a "one size fits all" kind of solution. However, the procedure is to submit your transcript and let the college determine how many credits are going to be transferred.