Getting a share from one's father's business while he is still alive

I have a question regarding inheritance and family business profits.

I live in a different country as my parents and my father has a business. It is a family business and I've worked in it in the past. My father doesn't go to work a lot these days and my brother manages the business. I am away and so not involved in the business.

My question is about inheritance and access to money from the business. I don't ask for money and I have a job that pays my bills. My brother on the other hand takes money from the business and makes bold decisions when it comes to buying things with family money.

Am I eligible to get a share of the profits from the business as per shariah? I understand that if the business is sold then I do have a share but while the business is running and my father is alive, is it immoral for me to take a share from profits even when I am not involved?