Verb conjugation of "compile" in English

It looks like we need to invite Erika again to my home, once the cake is ready. Of course, this should be done before Sunday to stay in the chocolate cake race. We should buy cream too.
I had never heard the phrase before. In America, there are also different idioms than here in England. It seems that the Americans say it differently than we do here in the United Kingdom.
I live in Cataluna in eastern Spain. I have learned in a language school in Berlin but unfortunately only for a short time. I am a waitress by profession and looking for a new job in my village.