go to this url chrome://settings/clearBrowserData
Select the bigining of times and mark passwords checbox
Review theres nothing on chrome://settings/passwords
go to https://passwords.google.com
open the console Control+Shift+J
Run $$('div[aria-label="Remove password"]').length
to get an idea of the ammount
Run in batches of 200:
$$('div[aria-label="Remove password"]').forEach( function(el, i, a){ if (i < 200){ el.click() } } )