Where do I change the follower and post numbers my site and presentations show?

Open Shared Values, the last link under Outputs. Under Figures, each of your figures shows its value with Auto-updates beside it: followers on each platform, posts, views and likes, and your website's figures, such as artworks, film and TV credits, years of work, exhibitions, episodes and destinations. Select Override to type your own figure, such as 46K or 2,400, and Save. It then shows Set by you, and Switch to auto goes back to the automatic figure. A figure with nothing to count yet is in Add a figure, where you can type one. With more than one website, choose the website to see its own figures.

The figures appear on your website's Stats blocks in Website Builder and on the numbers pages in Decks & Proposals, including the Analytics Sheet. Under Logos is each channel's logo, placed on its clips, thumbnails and social posts in Social, Clips & Thumbs.