According to IPCC, this document contains the high level summary of the understanding of the current state of climate, including how it is changing and the role of human influence, and the state of knowledge about possible climate futures, climate information relevant to regions and sectors and limiting human-induced climate change. It has around forty pages. https://www.ipcc.ch/report/ar6/wg1/downloads/report/IPCC_AR6_WGI_SPM.pdf