Hello @dhanush_sr,
First of all thank you very much for buying the pro version of the theme.
Yes, currently we do not have the demo file bundled in the theme but there is nothing to worry about as we do have the theme official documentation using which you will be able to set your site as in the demo.
https://themepalace.com/instructions/themes/nature-bliss-pro/
Further, if you have any confusion while setting up any of the sections then please write back to us so that we can help you.
Thank you.