Learn French: La nouvelle scène va être prête dans deux semaines. - The new stage is going to be ready in two weeks.

In French, dans is used with time to mean "in" or "from now" when talking about when a future event will happen. Dans deux semaines means two weeks from now. You would use en to say how much time it takes to complete an action, like actually building a stage "in two weeks".

Why does nouvelle come before scène?

Most French adjectives come after the noun, but nouvelle (new) is a common exception. It falls under the "Age" category of the BANGS rule (Beauty, Age, Number, Goodness, Size) for short, common adjectives that always go before the noun.

Why is there an "e" at the end of prête?

Adjectives in French must match the gender of the noun they describe. Since la scène (the stage) is a feminine noun, you add an -e to the masculine word prêt (ready) to make it prête.

Doesn't scène just mean "scene", like in a movie or play?

It can mean "scene", but it is also the standard French word for a theater or concert "stage". Context usually makes it clear, like here where a physical structure is being prepared!