可唔可以根據個檔案編號而知道果件案既判決系點??

The answer is yes.

Based on Hong Kong Judiciary's website:

http://www.judiciary.gov.hk/tc/legal_ref/judgments.htm

You can request the judgment record by mail (a fee may be assessed).

如果係高院案件有機會可以. 裁判書嘅case 就sorry 啦.

即管試下在司法機構的網站輸入案件編號試試:

http://legalref.judiciary.gov.hk/lrs/common/ju/judgment.jsp

no,you can't