Disabrie22 I am sorry you are going through this. I wonder if he is a good person at heart and if you want to save the marriage. Is it worth saving? If so, would you consider marriage counselling.
If he is abusive, then of course you should not engage in counselling. However, if he is not and you think it is worth working things out, see what you can do. That is what I would do.
But first, you need to really, really value yourself. You have given this man two children and twenty years of your life, you work, do child care etc. You are amazing. I know this because I've been married for nearly 20 years and we have two kids too. I work and I do stuff at home, I pick up the bulk of the childcare.
I have dyslexia and although I have not been identified as having dyscalculia I struggle with figures. My husband does most of the finance stuff in our home. It is quite common for one or other partner to be better with finances etc and do that side of things, I think.
So, I think it is quite standard for some couples to divide household jobs etc and one person to do more of the finances.