Hello,
I hope that since Dolibarr is a open source software, we can re-brand it and use it for offering commercial services without any limitations. So, I would like to know how can I remove all details related to "Dolibarr" i.e., places wherever it displays the name "Dolibarr" like interfaces, emails, reports etc. I would like to put my company name or other details over there. Can someone let me know it I can do this in this open source software and how it can be done?

- Regards and Thanks in advance

You can look at the source code.

You may add the constant MAIN_APPLICATION_TITLE to "yourname" into home - setup - miscellaneous

Thanks for the information @eldy. I would also like to know if I can install and offer ERP services for my client and charge money fro the service using this software.

Yes you can.
Dolibarr GPL licence allows this.

Note that you can also benefit of Dolicloud partnership to offer ERP services to your customers. More information on page: dolicloud.com/en/faq/140-become-a-dolicloud-reseller

Thanks for your quick response.