Translation:What performance are we going to see tonight?
"what performance are we going to see this evening" was rejected but should be accepted
"what performance will we go and see this evening" was rejected but should be accepted
"This evening which performance will we see?" rejected but should be accepted. FFS.
The plural "performances" should be accepted. Reported.
The character "qu (tone3) 去" means "to go" .
it is not 3rd tone，but 4th tone - 去 [qù]。 It's here to indicate motion “我们会去看表演” - “we'll go to see a performance”
It shows that you are "going" to another place to see the performance. You are not currently at the performance location.