Wealth is work.
Money is just a measurement. A way to score-keep the value of wealth amassed.
Real wealth is actually measured in physical assets, manufactured goods, or services we can buy.
Wealth is created when one or more people decide to work.
For instance, imagine a 2 person economy. Both people decide to sleep all day, everyday. Nothing gets produced. No wealth is created.
Now imagine if those 2 people decided to work 10 hours a day. 1 catches fish, and the other hunts wild game. At the end of the day, food is amassed. That food has intrinsic value. "Wealth" has been created.
Wealth is really just a psychological invention of the mind. Humans need things to survive. And like to have things that enhance their survival. Humans consider these things to have value, and anyone who possesses them, to have "wealth". Therefore, when humans make or produce these items or services other humans crave, wealth is literally created.