This prompt reminds me of Brewster’s Millions, albeit a very simplified version of it. (Side note: I was originally thinking of the movie adaption that started Richard Pryor. I had no idea that there was book that the film was based on.)
If I had a million dollars, I would tithe (give 10%) to my church first. Then I would donate to charities and ministries that I believe and have helped me to grow as a person. After I’d give to local political candidates who are involved in the community.