The phrase "to help a friend" means to assist or support someone you care about when they need it. It involves being there for them, providing aid, or giving advice to make their life better or easier. Full definition
She soon fell in love with grooming while helping a friend with their business for 3 years, then went on to become a grooming manager for 2 years. (sugarhillanimalhospital.com)
It's not uncommon to use the unemployed time helping friends in need. (medreps.com)
While helping a friend move a few weeks ago, someone asked me what the big games were these days. (waypoint.vice.com)