The iea has a Methane Tracker Data Explorer which has information of methane emissions by country or for the world. In 2021 the U.S. emitted 31,460 kt of methane which is 8.8% of the global emissions. There are various graphs, such as the one copied here, and links to download the data.
Tags charts and graphs data source
Check Also
How much do the top ten oil producers produce?
Our World in Data now has a Fossil Fuels Data Explorer. You can create a …