Ask an Immigration Solicitor. Get an Answer ASAP.
Good afternoon, you would not need to declare the PCN unless you have been issued with a CCj from the court.
If you have been issued with ccj you would have to show that you are making payment towards the debt and it should not affect your ILR application. If you do have an outstanding debt make a plan as soon as possible.
Any pcn issued in your name would need to declared if you have been filed with a ccj.