If i copy the main folder? Do i need do copy paste the another folder of Starcraft 2 folder in my documents. It consist of the player profile.

if you want to retain settings/save files/maps (cache rather) etc, it is recommended that you do

its ok, i dont need that.. so i just copythe main folder only in program files?

how about the files in program data?

if you dont need any of the mentioned stuff, just the folder from program files will do.