I know that in visual studio 2010 there wasn't 64 bit version. Is there 64 bit version for vs2012?
No, there isn't.
Probably for the same reasons stated for Visual Studio 2010 (no need for the additional address space, and because for this application it would bloat it, slow it down and will take much too long to port to such an architecture, not to mention - the 32bit version works on 64bit machines).
Update:
Microsoft have now announced that Visual Studio 2022 will be a 64-bit application.
I expect one of the main drivers is enabling the loading and debugging memory dumps that are larger than the addressable 32 bit space of ~4GB (which, given how long Windows has been 64 bits, are no longer that rare).