Good for a "Submit now" or "Save Only" feature of your PowerAPP. ( I have a flow theat alerts a department that a request has been submited based on this field's value)
The formula
(Put it in the form's "OnSuccess" property)
Set(formType,"Edit");Set(selectedItem,PickUpInfoForm_edit.LastSubmit);If(DataCardValue28.Selected.Value = "Submit now", Navigate(SuccessSubmitScreen,ScreenTransition.Fade), If(DataCardValue28.Selected.Value = "Save only", Navigate(SuccessSAVEScreen),ScreenTransition.Fade),true,false)=true