It does not matter if you are volunteering as a team or individually, volunteering comes with a lot of benefits including

Societal Contribution:
Volunteering will help you to make a positive contribution in the growth and development of society. You get to work for the cause you are most passionate about.

Broader Horizon:
Volunteering will broaden your perspective. It will cause an impact on the way you pursue your objectives and make decisions.

Leadership Skills:
As a part of a team, you will not only gain leadership skills, you will get a chance to employ them too. Everything depends on how well you learn to motivate people and how you cope up with pressure.

Making Life Better:
Your participation will be making a significant contribution towards a better tomorrow. It will bring a sense of satisfaction and self-motivation to do more.

Better Networking:
You get a chance to build your network with influential people and bigger companies. It gives you a chance to know people with the same goals as you.

CV:
The skills that you gained can form a significant part of your CV. You can impress your employer with your polished skills. This experience will also make your application stand out.