Hong Kong stamps - are any of these of high value ?

Thanks for your post, Anil (anilkhemlani).  Here is my opinion about your stamps:

From left to right:

1. HK, Sc155, 2c Gray (KGVI), CV $1.00 unused
2. HK, Sc114 or 137, 10c Ultramarine (KGV), CV 35c used, either variety
3. HK, Sc73 or 89, 4c Violet on Red (KEVII), CV 45c used, either variety
4. HK, Sc134, 5c Violet (KGV), CV 35c used
5. HK, Sc159, 15c Carmine (KGVI), CV 35c used

For numbers 2 and 3, the exact catalogue number depends on which watermark the paper has, but in these cases, it doesn't affect the values.  The above values are based on the 2024 Edition of the Scott Worldwide Catalogue.

Note: If these stamps are stuck down, and you are planning to soak them, you will need to be careful.  The image on the KEVII 4c Violet on Red is most likely fugitive to water and will fade if immersed for soaking.  The others should be OK for standard soaking.

Hope this helps!