The phrase "boring chore" means a task or job that is uninteresting and not enjoyable. It is something that you have to do but don't find it fun or exciting. Full definition
It might be where you have to do boring chores and store practical equipment, but design your utility room well and it can be a game - changer. (idealhome.co.uk)
To support her development, involve your child in meaningful daily activities like shopping, laundry, cleaning and cooking — they might seem like boring chores to you, but they're all extremely interesting, rich learning experiences for your child. (care.com)
Smith also penned the novel Abraham Lincoln: Vampire Hunter which was also adapted for the silver screen, but more to the point, it was an insufferable boring chore to watch that embraced literally nothing about its inherent zaniness. (flickeringmyth.com)