2) do you consider how Jewish people feel, who were prosecuted, discriminated and killed by Christians, when you refer to Judeo-Christian traditional values? The early massacres in Europe on Jewish people were mostly done by Christians https://en.wikipedia.org/wiki/Antisemitism As I said, my Jewish friends get quite rattled and angry if somebody uses the term.
3) For one: religious tolerance: when other religions fought religious wars, Islamic countries were the first who tolerated other Abrahamic religions.
Also the impact of Islam and Muslims on philosophy is enormous. For example, we would have lost most of Ancient Greek texts without the Caliphate ... the Caliphate saved them and developed them when Christian countries were thinking about holy war :) https://en.wikipedia.org/wiki/Islamic_world_contributions_to...
They occupied Spain for a long time, brought irrigation, math (the concept of 0), geometry and a lot of other sciency stuff to Europe. You know how the Christians responded, getting all that tolerance, knowledge, and culture: https://en.wikipedia.org/wiki/Reconquista#Conversions_and_ex... https://en.wikipedia.org/wiki/Spanish_Inquisition
Interestingly, they also forced Jews to convert ... this seems where the first citings of your used word "Judeo-Christian" comes from (the Inquisition lasted until the 1800s). Can you understand that Jewish people might not be found of you using it, now.
Oh and when Christians still used bloodletting to remove "evil spirits", Islamic countries had actual medicine.
Yet, you are probably right, they didn't contribute anything. The only contributions that count are the contributions of our tribe and what other Christian authors say about them.