how many supercontinents have there been in earth’s history

Considering these examples, there have been at least 5 supercontinents throughout Earth’s history.

Additionally:

• Some scientists propose the existence of even earlier supercontinents before Kenorland, but evidence for these is more theoretical.
• The boundaries and exact formations of these supercontinents are still being researched and refined.

So, while 5 is a well-established minimum, the number could be higher depending on future discoveries and how strictly we define a “supercontinent.”