Making a million dollars in Swift (or any language, for that matter) can be achieved through various means. One way to do so is by developing a popular app that generates revenue through in-app purchases or advertisements. Another approach is to freelance or consult in Swift development for high-paying clients.
Another approach could be to start your own business around a Swift-related product or service. For example, you could develop a tool or library that solves a common problem faced by Swift developers, and sell it to other developers. Alternatively, you could create an online course or e-book on Swift programming, and monetize it through sales or subscriptions.
However, simply knowing Swift programming may not be enough to make a million dollars. It's important to have a strong understanding of finance and entrepreneurship, as well as marketing and sales, to build and grow a successful business. It takes hard work, dedication, and a willingness to take calculated risks. But with the right mindset and strategy, making a million dollars in Swift is possible.