Hi Sindhu,
Hong Kong is very safe, in fact a lot of people choose Hong Kong as a destination for their first solo international trip. I have come across a similar post on Tripoto about solo travel experience in Hong Kong. You can go through it and plan your trip. https://www.tripoto.com/trip/hong-kong-my-first-solo-trip-5a4d216c196c5
Hi Sindhu! HKG is one of the safest place for female/solo travellers. Ive known a lot of girls who have felt themselves safe while being on a holiday at HKG. Most of the tourist places have a cctv and the law works perfectly fine. But a personal awareness and a watchful eye is necessary. You can read the below blog for more info. Safe travel to you! https://www.yogawinetravel.com/how-to-stay-safe-as-a-solo-female-traveler-in-hong-kong/