Is raspbian for the Raspberry Pi 2 B 32 bit or a 64 bit OS? Just wondering because I am unable to find this information online.
It is a 32 bit OS, as all current Raspberry Pi hardware (except the new Raspberry Pi 3) uses 32 bit ARM CPUs.
The statement that the distinction between 32 bit and 64 bit is really only pertinent to x86 OS's is pure nonsense - as goldilocks points out there are both 32 and 64 bit ARM CPUs, and thus both 32 and 64 bit ARM OSes. Just like there are both 32 and 64 bit OSes for PowerPC, Sparc, MIPS and a number of less common ISAs.
The distinction between 32 bit and 64 bit is really only pertinent to x86 OS's. I expect you are asking in regards to installing software, all software you use on the Pi must be compiled for the ARM processor (ARM 7). Having said that the ARM instructions are 32 bits. You can read more in this forum post