A the questions " will Bruno's dad find him" a evaluative question or a interpretive questions?

The best answer is interpretive question.

An interpretive question is one directly related to the text (what's happened in the story) with more than one possible response. The answer must be supported by the text.

An evaluative question has more to do with one's personal values and isn't necessarily strictly related to the text. One example could be "Bruno's dad searches for him in the story. Do you think most dads would do the same?"