Check out example codes for "how to pass state variable in swiftui". It will help you in understanding the concepts better.

Code Example 1

// View1:

struct FirstView: View {
    @State var count = 0
    var body: some View {
        VStack{
            Text("\(self.count)")
            Button(action:
                {self.count = self.count-10})
            {
                Text("-")
            }
            SecondView(count: self.$count)
        }
    }
}

// And View2:

struct SecondView: View {
    @Binding var count: Int
    var body: some View {
        Button(action: {self.count = 0}) {
            Text("Reset")
        }
    }
}

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