Tie Break Score

Could someone explain to me what the "tie break" column means (rightmost column when looking at a chess.com tournament), how it's computed, etc.? Thanks.

How do ties in tournaments work? - Chess.com Member Support and FAQs

Thanks. But it still doesn't make sense of the tournament I'm in. I currently have 6 points. By this definition:

Buchholz cut 1 - Your Buchholz score is calculated by adding together the tournament scores of each player you played against, except the one with the lowest score (this is the 'cut 1.') The final number is your Buchholz tie-break score.

each of my opponents should therefore have at least 6 points as a tie break score. But they don't.

If you're playing in a daily tournament, which is a round-robin format, then the Sonneborn-Berger calculation is the tie breaker.