Hello, I m Shyam from Nepal. I m planing to visit HK, can i get a visa ? for how long ? how many $

Yes it's possible that you can get it. If you apply from the embassy, it may take four working days. In case that the embassy transfers the application to HK Immigration Department, it may take four to six weeks. The fee is 100 dollars. However, you may also need to pay for the telecommunication fee and servce fee to the embassy.