There’s a fascinating and thought-provoking book on this subject - appropriately titled
Love Wins: A Book About Heaven, Hell, and the Fate of Every Person Who Ever Lived by Rob Bell
Here’s a brief description from Amazon:
“in Love Wins, bestselling author, international teacher, and speaker Rob Bell addresses one of the most controversial issues of faith—hell and the afterlife—arguing, would a loving God send people to eternal torment forever? With searing insight, Bell puts hell on trial with a hopeful message—eternal life doesn’t start when we die; it starts right now. And ultimately, Love Wins.”