SwiftUI How to center Text in a Form?

Use frame to expand the text's frame to the full width and multilineTextAlignment to cause text (including wrapped text) to be centered.

Form {
    Text("Centered text, even if wraps")
        .frame(maxWidth: .infinity)
        .multilineTextAlignment(.center)
}

You can wrap your text into HStack:

Form {
    Text("I am left aligned")
    HStack {
        Spacer()
        Text("I am centered!")
        Spacer()
    }
}

This works.

Form {
    Text("I am left aligned")
    Text("I am centered!")
    .frame(maxWidth: .infinity, alignment: .center)
}