RG Scores are a combination of several factors:
1. Publications
2. Questions asked.
3. Precision of Answers given etc
Research Gate has always offered these suggestions as to how an individual can raise his/her scores:
"To improve your RG Score, ask a question, or give another researcher a helpful answer. Share anything from negative results to raw data or full-fledged publications. If it's of worth to the community, your peers will likely give you feedback, and this will play into your RG Score. Connect with others, contribute high-quality content, and your score will rise."
My concern is how significant are these scores? Do they portray someone as a more qualified and prudent researcher?