https://ideas.ted.com/environmental-impact-carbon-emissions-of-space-tourism/
https://gizmodo.com/jeff-bezos-space-joyride-emitted-a-lifetime-s-worth-of-1848196182
Like many things there is a lot of back and forth depending on what numbers you throw into the calculation. Raw carbon from the rocket fuel may be low, but taking in indirect sources raises the totals dramatically. I prefer to look ilat the totality of things since things like flying private jets to the launch site wouldn't happen if there where no launch to attend.