Gross profit is total revenue minus the cost of the inventory they sold. It doesn't account for fix costs like rent, employee wages, or anything else etc. Once you subtract those, you get their net income, which is their actual profit.

CVS Health annual net income for 2021 was $7.91B, a 10.18% increase from 2020.

CVS Health annual net income for 2020 was $7.179B, a 8.22% increase from 2019.

CVS Health annual net income for 2019 was $6.634B, a 1216.84% decline (?) from 2018.

https://www.macrotrends.net/stocks/charts/CVS/cvs-health/net-income