Can the earth's average temperature rise by 6 degrees celsius in the next 100 years if the fossil fuels use dramatically?

It is difficult to predict with certainty, but a 6-degree temperature increase in 100 years due to increased fossil fuel use would be considered a very extreme scenario by most climate scientists. Such a rapid and significant warming trend could have catastrophic effects on global climate patterns, ecosystems, and human populations. It is crucial to reduce greenhouse gas emissions to mitigate the impacts of climate change.