I can't find my API key

I am new to the Infusionsoft world. I would like to add the plugin to my company website. Unfortunately, I am unable to find my API key… can someone help?

Here are instructions for both versions of Infusionsoft:

https://new-infusionsoft.knowledgeowl.com/help/api-key
https://classic-infusionsoft.knowledgeowl.com/help/api-key