To create and format a table of contents in Google Docs, follow these steps:
Place the cursor at the location in your document where you want the table of contents to appear.
Click on the "Insert" tab in the menu bar.
From the drop-down menu, select "Table of contents."
Choose either "With blue links" or "With links styled as headers" depending on how you want the table of contents to look.
The table of contents will be inserted at the cursor's location. It automatically generates based on the headings in your document.
To update the table of contents as you make changes to your document, click on it and then click on the refresh icon that appears at the top-right corner.
To customize the formatting:
Remember to update the table of contents whenever you make changes to your document to ensure it remains accurate.