HOW TO SEE HOW MUCH SPACE IS TAKEN BY SNAPSHOTS?

If you’re running Big Sur or earlier, you’ll need a third– party utility such as Carbon Copy Cloner. Disk Utility in Monterey can now tell you the size of individual snapshots, and how much space you should expect to reclaim if you were to delete them. To enable that, select a volume in Disk Utility and use the Show APFS Snapshots command in its View menu. Column headers have informative tooltips.