You do have No idea what you are talking about. SARS-CoV-2 is a RNA virus—a different animal. You are thinking about DNA viruses: DNA viruses all replicate in the nucleus except for the pox virus, which replicates in the cytoplasm. RNA viruses all replicate in the cytoplasm except for the influenza virus and retroviruses, which replicate in the nucleus. In the cytoplasm is the ribosome translation mechanism that the mRNA vaccine targets with its blueprint. It is this ribosome-associated protein quality control in the cytoplasm that all cells have to prevent protein errors that would cause things like cancer. This process I have given in this thread and is something you have to think about to understand.
And what does the mRNA cause the cells to produce perfesser?