Oh man I would definitely give some to the church, go to a grocery store and pay for as many people’s groceries as I could. I’d pay off the debt we have for sure. Buy a new car, buy all new furniture, appliances, bedroom sets etc. Go shopping and get new clothes, shoes, etc. for everyone! I would buy tickets for us to go to Nigeria and the luggage we needed. I would go out to eat to very nice restaurant and a movie with the family to end the day lol.
If I had an unlimited budget for a day, I would open millions of centers to support those struggling with mental health, depression, and anxiety, as well as centers with good free healthcare. I’d make sure orphans receive love, care, and quality education. I’d help the elderly live with dignity and comfort. And I’d provide free, nourishing meals to every nursery, school, and university.
For myself and my family, I would buy our dream house, plus two for my kids. I’d probably book our dream holiday to travel around the world. I would also invest a huge amount of money, because you never know what life brings 😀

Very nice of you to think of others first! And yes definitley invest!