For all we know, the operating system was designed to run on a 32 bit processor. That doesn't mean your processor can't handle a 64 bit OS. The word length mostly defines the processor architecture, and doesn't necessarily affect the entire computer's architecture.
Why don't you give us your full specifications, and the name of the specific software you want to use?
If you want to understand what the requirements and specifications mean, we can help you with that too, but first things first. We would need to know CPU, RAM, GPU (if you have one), OS, available storage space, name of the software and any other thing you think could be relevant.