I am a travel agency specializing in German visas, and the above replies are not very accurate. The appointment is only a time for submitting materials. The visa application form must be filled out on the designated official website before submitting the materials, printed out and signed, and then submitted for signature together with the materials you prepared. The interview time will be notified to you after you submit your visa. No one will tell you the result at the time of the interview. You must wait until the visa is issued. In addition, if the materials are not prepared, they will not be handed in, and there are very few opportunities to supplement the materials.