It depends what price the US and Israel will pay for the agreement.
UAE got a deferral of Israeli west bank territory annexation. Not sure what Bahrain got. Sudan got taken off a terror list. Saudi might want out of any blame for 9/11, some technology transfer, or a guarantee of US support in a war with Iran. It will surely be a higher price than UAE or Sudan.
Would we be willing to pay?
I think the Saudis already have a US guarantee of full backing if attacked by Iran. By making a deal with Israel, they would formally add Israel to their list of allies against Iran. That itself is no small inducement for a deal.