An initial eviction is filed with a zero ($0) dollar balance because the monetary value of the judgment is not yet known.
Step one of an eviction is to file the forcible entry/detainer judgment and it is not yet known what the final dollar amount will be since the lost rent and damages have not been calculated at this point.
Step two of the eviction filing is to report the monetary amount that should be attached to the judgment.
So the zero ($0) eviction record likely means that an initial eviction filing was filed in court. If there are no subsequent filings with a monetary value, this typically means the past due amount was finally paid and the eviction proceedings were ended.