How to add a new external collection with WooCommerce?

I am looking to link WooCommerce to my app.
I tried with Zapier but it doesn’t work. So I would like to try adding an external collection, but I can’t find any article or tutorial that explains how to do this with WooCommerce. I can create an API rest but I cannot integrate it with Adalo. I don’t know where to find the API base URL and I don’t know where to enter the identifier and key. Could someone help me or send me the link of a tutorial, or an article. I’m desperately looking but I can’t find anything.