You need a visa for Jamaica if you have a Palestinian passport
Visa options for Jamaica
Visa on arrival for a maximum of 3 months
Travelers need a visa to visit Jamaica for Business or Tourism. Travelers can get a visa on arrival in Jamaica at the port of entry, such as an international airport or border crossing. Travelers must have an Affidavit of Identity.
This is not offered by sherpa°.
Apply on the government site.