No. Palestine doesn't ask visitors to fill in an online arrival form (also called an entry form, immigration card or landing card) before they travel. Entry is controlled by Israel (ETA-IL) or via Jordan at the Allenby crossing.
Do I still need a visa for Palestine?
An arrival form is not a visa. Whether you need a visa or an electronic travel authorization depends on your nationality, so check Palestine's official immigration website or your own government's travel advice.
Other countries in South Asia, Central Asia and the Middle East