With the introduction of Updates, we have to differentiate between “Sheet Edits / Sheet Updates” and “Edits”
Updates include Adds, Edits, Deletes, and Syncs. An “Edit” occurs when an App or Page user changes a row in your data source. A “Sync” occurs when you make changes to your data source that update your App or Page. You can think of Syncs like “Sheet Edits / Sheet Updates”
Going back to your question, if a row updates your Google Sheet in a way that changes your App or Page, then that will count as a Sync. I would check how many “Sheet Edits / Sheet Updates” your project uses today as that will be a good estimate for how many Syncs your project will use on a team plan