The solution from jaredsinclair doesn't work for me. So I modified his solution to make it work.

I like the PopoverTip and want to use it to display details of the data the user taps on. That's why I added generating the displayed text when the button is pressed to the example.

import SwiftUI
import TipKit


struct SomeTip: Tip {
  let id: String
  let titleString: String
  let messageString: String
  @Parameter static var shownTips: [String: Bool] = [:]

  var title: Text {
    Text(titleString)
  }

  var message: Text? {
    Text(messageString)
  }

  var rules: [Rule] {
    [
      #Rule(Self.$shownTips) { tip in
        tip[id] == true
      }
    ]
  }

  var options: [TipOption] {
    [
      Tip.IgnoresDisplayFrequency(true)
    ]
  }
}


struct ViewWithOnScreenHelp: View {
    @State private var onscreenHelp = false

    @State var message = ""

    @State var garbage = ""
    @State var tip = SomeTip(
        id: "",
        titleString: "",
        messageString: ""
    )

    var body: some View {
        VStack {
            Button("Tip") {
                garbage = UUID().uuidString
                message = "\(Int.random(in: 0...1000))"

                tip = SomeTip(
                    id: garbage,
                    titleString: "Tip",
                    messageString: "Messge: \(message)")

                SomeTip.shownTips[tip.id] = true
            }
            .background {
                Color.clear
                    .popoverTip(tip)
                    .id(garbage)
            }
        }
        .padding()
        .task { // This .task would normally go on the app root-view
            try? Tips.resetDatastore()     // not normal use
            try? Tips.configure([
                .displayFrequency(.immediate),
                .datastoreLocation(.applicationDefault),
            ])
        }
    }
}

#Preview {
    ViewWithOnScreenHelp()
}