Learn French: Est-ce que nous devons trouver un compromis pour collaborer ? - Do we have to find a compromise to collaborate?

While an infinitive verb like collaborer does translate to "to collaborate", French requires the preposition pour when you mean "in order to". Whenever "to [verb]" expresses the purpose or goal of an action, you must use pour followed by the infinitive.

Can I translate nous devons as "we must" instead of "we have to"?

Yes, absolutely. The French verb devoir covers both "must" and "have to". French doesn't make the same distinction between personal obligation and external obligation that English sometimes does.

Why does un compromis end in an -s if it is a singular noun?

Some French nouns naturally end in -s in their singular dictionary form. For these words, the plural form is spelled exactly the same (des compromis). In both the singular and plural forms, this final -s is silent.

Could this question be asked using inversion instead of Est-ce que?

Yes, you could say Devons-nous trouver un compromis pour collaborer ? Using Est-ce que makes the sentence a bit more conversational and standard, while inversion sounds more formal and is often preferred in professional writing.