Here "you" is plural. Jesus was speaking to the religious leaders and also to the Jewish people in general. (See: [[rc://en/ta/man/translate/figs-you]])
Here "kingdom of God" refers to God's rule as king. This can be stated in active form. Alternate translation: "God will take his kingdom away from you and will give it to a nation" or "God will reject you, the Jewish people, and he will be king over people from other nations" (See: [[rc://en/ta/man/translate/figs-metonymy]] and [[rc://en/ta/man/translate/figs-activepassive]])
No one is sure if Jesus meant that God would someday give the kingdom back or that he would never give it back. Your translation should allow both possible understandings.
"Fruits" here is a metaphor for "results" or outcome." Alternate translation: "that produces good results" (See: [[rc://en/ta/man/translate/figs-idiom]])