You cannot apply for a Schengen visa for the Netherlands in Syria. You will need to go to an application location in the region, such as the United Arab Emirates.
Entering a country in the region
If you travel to another country in the region to apply for a visa for the Netherlands, you need to arrange your entry into that country by yourself.
Dutch embassies, consulates-general and external visa providers such as VFS Global do not register your name at the border, and cannot facilitate your entry.
If you have any questions, please do not hesitate to contact us.