According to the United Nations Environment Program (UNEP) Emissions Gap Report 2024, the median estimate of emissions level in 2030 consistent with limiting global heating to around 1.5°C is 24 GtCO2e (range: 20–26), which is equivalent to approximately 17.8 GtCO2 based on the 2019 share of CO2 emissions in greenhouse gas emissions (74.1 per cent). According to the UN, the global population is projected to reach 8.5 billion in 2030. Dividing the 1.5°C compatible 2030 emissions level (17.8 GtCO2) equally by 8.5 billion gives an estimate of an annual carbon budget of 2.1t CO2 per person.
I had to look this up:
https://www.oxfam.org/en/press-releases/richest-1-have-blown-through-their-fair-share-carbon-emissions-2026-just-10-days
Don't worry, they're working on ideas to decrease the population as we speak. Unfortunately, war isn't great for climate preservation, either.