It really depends on what you mean? It's a purposely, nearly obtusely, intangible concept. I'm not unwilling to talk about it if I get a proper definition, but my opinion would be a mere opinion formed from the facts I have on hand. I have some suppositions that are outside the realm of what science has been able to dig in to, but without actually factual backing, I also acknowledge that my ideas are conjecture that line up with how I perceive the world.
I mean, ya, if that's how you wanna define a soul, I'll say that exists.
As for the more common definitions which tend to extend to moving that software around and that software moving to the cloud in the case of a system failure, I have no reason to believe the brain has wifi, gps, or satellite functionality.
But if we simply describe it as "the software on the brain", I hold no objection and can comfortably say it exists.