What is the question asked ???
Translated: My friends are Peter and Whitney. They love to make fun things. Peter and Whitney are very sweet. We have been friends for many years. They are brother and sister. We are best friends. Hope this helped!
because conocer is used more when you personally know someone/thing
saber is used when you know facts about someone or something.
se is conjugated in the yo form
sabes is conjugated in the tu form so this one is correct because you are asking someone if they know where the party is.