Nothing...you die like everyone else...the judgement is to remain in that state of death/non-existence or to be resurrected...your choice...And if you don’t accept him but live a good life anyway what does god do to you? And why?
"And just as it is reserved for men to die once for all time, but after this to receive a judgment." Hebrews 9:27
Only those who look to christ for their salvation will live again...
"also the Christ was offered once for all time to bear the sins of many;+ and the second time that he appears it will be apart from sin,* and he will be seen by those earnestly looking for him for their salvation.+" Hebrews 9:28