Since Peter decided not to tell Magneto that he was his son, perhaps this will finally come to light in X-Men: Dark Phoenix.
A decade later in X-Men: Apocalypse, Quicksilver was still living at home and had spent years trying to find Magneto, who turned out to actually be his father.
Evan Peters’ Quicksilver was introduced in X-Men: Days of Future Past as a mischievous teenager who was using his speed to steal anything that caught his fancy.
After saving everyone in the X-Mansion in another amusing super speed sequence (this time “Sweet Dreams” was playing) and escaping William Stryker’s compound, he aided the team in fighting Apocalypse and the Four Horsemen, and he remained at the rebuilt mansion to train as one of the new X-Men.