做翻譯, 到韓國讀韓文

英中翻譯我有信心既, 因為英文底唔差, 如果面試有試譯我有信心做好的 <=
As you said, your English is not so bad, so I reply this in English and I trust that you would be able to understand this without a problem if what you said is true.

With due respect, I dont think learning another language especially Korean lauguage will privode you any advantage in your future career. If your English is not so bad, why not pursuing it further as English is more useful than Korean in HK. There will be more English/Chinese translator/interpreter opportunities in HK job market.

I suppose that you have passed your DSE but having obtained those results at that level is not competitive in HK. You should at least get something more eg a Bachelor degree to enhance your competitiveness among the other employees. So, dont waste money in studying Korean, use it in your degree study and you will find it more fruitful.

As to your questions:
因為D人話韓文佢通常睇你留過學先認証既係咪事實呢?
No. The thing that they will look at is your actual ability to speak Korean, not the TOPIK result or whether you have studied in Korea.
If it is a Korean company, a Korean or a staff who speak fluent Korean will chat with you in Korea. If your Korean language is no good, you will lose you opportunity even though you have good academic record/degree.

定係我都驚我學歷唔夠, 副學士都未畢業, 寧願我留係香港去例如公開大學讀翻譯degree,一路係香港出面d課程讀韓文?
yes, better to study a degree program, that will help you more.
No need 係香港出面d課程讀韓文.

其實有無必要讀番剩底既副學士?我問過,因為轉左學制, 剩底個sem而家讀要一年
1 year is not much in your say 60 years life span + you are young.