Do I need to undergo training before I conduct the skill test for the PPL?

There is no requirement to undergo training before the skill test, but it is highly recommended.

Pilots who do not meet the 100 hours as a pilot, which is required to convert the licence, shall follow the procedures for crediting their third-country licence. You shall undergo an approved training programme at an ATO or DTO. All the required training exercises in the PPL programme must be conducted. How much credit you will get is based on the recommendation from the ATO/DTO. A shortened PPL programme will typically include 15–20 hours of dual-flight training and some solo flights, depending on your previous experience. The credit recommended by the ATO/DTO, and the training programme they develop for you, shall be approved by the CAA Norway before any training for the issue of a PPL licence can start.