Is there a way to hack my character on battle.net???

if you're talking about an open character, there isnt one yet. for 1.10 when realms are up. there probably will be soon since the new security features are going to be open ended for bout 96 hours....dont ask how i know this. it might cause trouble.

lol people join blizzard just to log in in there d2 scripts or somthing like tht

scripts dont hold long. most spammers on battlenet notice their accounts (not just the one they're using) is missing and their cd key banned. some reason is blizzard caught them. other cases i get tired of the spamming and ban cdkeys with a coded command.