Every time a Supermetrics query pulls data from Ahrefs, it consumes some of the connected Ahrefs account’s API quota.
You can find an account’s API quota and usage in Ahrefs. Note that the integration row consumption doesn’t always correlate with the number of rows you fetch with Supermetrics. Some reports types charge more, and some charge less.
Visit Ahrefs’ documentation for a full list of report types and their API quota cost.