Not only no Arab country supports Trump's peace plan, on February 1st the [Arab League stated that it **unambiguously rejects it**][1]:

> The Arab League foreign ministers meeting in Cairo said the plan did not meet the minimum aspirations of Palestinians, and the League would not cooperate with the US in implementing it.

> The ministers affirmed Palestinian rights to create a state based on land captured and occupied by Israel in the 1967 Middle East war, with East Jerusalem as capital, the final communique said.

It's worth emphasizing that this opposition is shared by the Arab countries which are US allies:


> Foreign ministers from Egypt, Saudi Arabia and Jordan, three close US allies, as well as Iraq, Lebanon and others, said there could be no peace without recognising Palestinian rights to establish a state within the pre-1967 territories.



  [1]: https://www.theguardian.com/world/2020/feb/01/palestinians-cut-ties-israel-us-trump-peace-plan