Do you believe (hypothetically speaking) that salvation can occur in the post-mortem instant?
Death bed conversions are valid if that is what you are getting at. God would prefer it happen earlier — it’s a better witness that way.
Or maybe your question means such that the best answer is: your salvation is “complete in the day of Christ Jesus.” Which offers a lot of red herrings because Christ Jesus has a lot of “days” but truly, the acknowledge-and-repent cycle won’t be finished until the verge of heaven. Now for those who have gotten far along on earth such that their faith is full of joy, I think they would also find that final repentance in line with same. It might amount to a mild sense of embarrassment and a readily willing correction. Others, it could be a lot rougher. But the salvation promise accepted during lifetime, wraps one’s entire eternity. Do not ask me more. I didn’t invent this reality. I’m only mapping it from the scriptures, “rightly dividing” the word of truth.