Is it possible to score 90 in all 4 sections of the PTE exam?

The PTE Academic scores required for teacher registration by Teaching Council of Aotearoa, New Zealand, are 69+. The specific minimum marks in each of the English communication skills are -

• 79 in Speaking
• 73 in Writing
• 62 in Reading
• 61 in Listening

For admissions to universities abroad to undergraduate courses, a PTE score between 51-60 is generally considered sufficient. However, higher scores can lead you to win an atractive scholarship or get selected in a good college.  

The Silver Fern Job Search visa is a 9-month work permit for young, skilled individuals aged 20-35 to find skilled work in New Zealand. The Skilled Migrant Category on the other hand is a separate, points-based pathway to permanent residence for skilled workers. Both of these visas require 58+ PTE s

The Retell Lecture PTE assesses the speaking and listening skills of test takers along with their oral fluency and pronunciation. Though used in this task for reading instructions, your scores do not get affected by your reading skills. 

Yes. Retell Lecture PTE undergoes partial credit scoring. However, it must be noted that you don't get any score for recording no response or giving and original or irrelevant response.