You might've gotten an email from us (specifically, Leagueoflegends@email.riotgames.com) about getting RP for answering player questions. First, we salute your vigilance against phishing attempts, and hope that you spread to friends and peers the importance of digital security. Second...this one's legit! We sent it!
If you're here on accident but that first paragraph has you intrigued, here's the rundown: We're testing out a program in partnership with a company called Directly which lets vetted players answer other player questions.
Interested in becoming an expert? This is a beta test, so we're not looking for new experts just yet, but when we do, we'll reach out to high-Honor players who love helping others.