How to repair pizza box burn on wooden table?

burnt the wood, or left a white heat mark?

I'd try coating it with mayo for a few hours first, then cleaning up That's what worked for me. Here are some other easy minimal-damage-possible ideas:

http://lifeasmama.com/7-ways-to-remove-water-burn-marks-from-your-furniture/

You can place a moist cotton cloth over it and quickly iron over the moist cloth using a warm iron; do not use the steam function on the iron.

Heat marks can be tough to remove. Here's a method to try on lacquered wooden surfaces only: Mix a dab of non-gel toothpaste with baking soda to make a paste. Rub gently over the stain until the paste feels warm. Then wipe clean with a damp cloth. You may have to repeat this process several times to lift the mark. Follow up with furniture polish or oil.

I saw a video recently on how to remove them. You tube I think..the idea is to remove the moisture in the mark and it will disappear...just checked “how to remove white heat stains on wood Using an iron” at youtube.com. 4 videos to watch.

Check out you tube how to fix a heat spot with a cloth and iron.

Okay, I pd stuttering...you can get the mark off by using a clothes iron on top of a towel. There are videos on you tube to see how it’s done