Hello @Belal,
The child theme is a theme that inherits the functionality of the parent theme and allows you to make modifications or add additional functionality to the parent theme. If you have made all your changes/modifications in the Child Theme, then you can use the Child Theme on your site.
For further information, please read these articles: https://www.wpbeginner.com/glossary/child-theme/ &https://www.hostitsmart.com/blog/difference-between-parent-theme-child-theme-in-wordpress/.
Best Regards,
8Theme’s Team.