Section 203 targets those language minorities that have suffered a history of exclusion from the political process: Spanish, Asian, Native American, and Alaskan Native. The Census Bureau identifies specific language groups for specific jurisdictions.
Section 203 says that jurisdictions (cities, counties, states) shall provide election materials in the language of the applicable minority group as well as in the English language.
DOJ: MINORITY LANGUAGE CITIZENS: Section 203 of the voting Rights Act pdf
US Census: 2020 Presidential Election Voting and Registration Tables (2020) pdf
GPO: Federal Registrar: Voting Rights Act Amendments of 2016, Determinations Under Section 203 pdf