I am not sure I understand. There are no number codes to break? Unless you have a physical wheel bias, no number has any more relevance than any other?
You said its "casino software" so you mean RNG, right? I have never heard of "RNG bias" but if such a thing exists, I am pretty sure you will need at least hundreds of spins to analyze (like 500) and I am pretty sure much more than just that (thousands for sure, maybe even millions).
Ok, I have heard of "RNG wheel bias" where certain people have claimed to break the roulette RNG "code" but I don't think such a thing is worthy of belief.