1. What is the cooking classroom like?

It's just like a big kitchen.

2. What does the cooking classroom look like?
It looks just like a big kitchen.

(Are both grammatical?)

3. What is the score?
It's 3 to 1.

4. What is the score between them?
The score is 3 to 1.

(Are both grammatical?)

All your sentences are fine! Congrats!!

=)