The 21st Century SKILLS Act would overhaul federal job training programs by replacing individual training accounts with "skills training grants" that workers can use to pay for training and supportive services like childcare and transportation. Eligible individuals include dislocated workers, those receiving unemployment benefits, and employed people earning no more than 100 percent of their state's median income, provided their household income does not exceed $150,000. The bill establishes specific grant amounts ranging from $6,000 to $10,000 depending on household income level, adjusted annually for inflation starting in 2025, with limits on program costs tied to community college tuition rates. The legislation also requires the federal government to maintain an online portal and clearinghouse through the CareerOneStop website where eligible individuals can request grants and compare training providers and program performance data. The bill authorizes whatever funding is necessary to implement these training services and requires an awareness campaign during the first year to inform workers and employers about the program's availability.