Like a certificate for watching or doing a tutorial? In all honestly those are nothing more than a participation trophy. Your portfolio should do a much better job showcasing your artistic ability than something that says you did a tutorial. Don't bloat your resume with irrelevant stuff. Putting competitions you competed…
Could be worth it if you're applying for a teaching gig at a for-profit school or workshop. Or you made a gumroad paid lesson for example. Someone might be impressed enough they'll buy your tutorial cuz you have creds to back your skillz up :\ .