The text of the law says it applies to "the taxpayer".
“(1) IN GENERAL.—In the case of any taxable year beginning in 2020, if the adjusted gross income of the taxpayer for such taxable year is less than $150,000, the gross income of such taxpayer shall not include so much of the unemployment compensation received by such taxpayer (or, in the case of a joint return, received by each spouse) as does not exceed $10,200.