﴿ يَوْمَ يَبْعَثُهُمُ ٱللَّهُ جَمِيعًۭا فَيُنَبِّئُهُم بِمَا عَمِلُوٓا۟ ۚ أَحْصَىٰهُ ٱللَّهُ وَنَسُوهُ ۚ وَٱللَّهُ عَلَىٰ كُلِّ شَىْءٍۢ شَهِيدٌ ﴾

“on the Day when God will raise them all from the dead and will make them truly understand all that they did [in life]: God will have taken [all of] it into account, even though they [themselves] may have forgotten it - for God is wit­ness unto everything.”

The day when God will raise them all together He will then inform them of what they did. God has kept count of it while they forgot it. And God is Witness to all things.