Hi @ChandanMishra,
How do you edit the existing ticket? Through the Edit Form(your FormCreate form)?
Do you send notification email when user click submit button?
If yes, assume that:
1. Your datasource is a SharePoint list and you want to add notification for the “Status” column.
2. Your Status column is a Choice column.
3. In your edit form, display the ID column, so that there will be a ID_DataCard. The name of my ID column inside ID_DataCard is DataCardValue10. Since ID value cannot be changed(generated automatically when you create new SharePoint item). Even you change the Title or other column value of this item, we still can find this record using the ID value. You can also find this record based on other column like Title.

This time, you can add below formula into your submit button(DataCardValue11 is the name of my Status control, DataCardValue10 is the name of my ID control)
If(DataCardValue11.Selected.Value=LookUp(list9,ID=DataCardValue10.Text).Status.Value,
SubmitForm(EditForm1)&&Office365Outlook.SendEmailV2(notification email for ticket status changed here),
SubmitForm(EditForm1)&&Office365Outlook.SendEmailV2(notification email for new ticket here))
Best regards,
Allen