If you owe tax on the amended return, you should pay it now. Do not wait until your amended return has been processed. The sooner you pay, the less the penalties will be.
It will be a long time before your amended return is processed or any status information is available. The IRS processing centers were closed for several months because of the Covid-19 pandemic, and they did not process any mailed tax returns, including amended returns. They didn't even open the mail that they received. The unopened mail is sitting in large trailers parked outside the IRS processing centers. A few weeks ago an IRS spokesperson said they had about 11 million pieces of unopened mail. They are just now starting to open the mail and process the mailed tax returns, but they have reduced staff and a huge backlog. There is nothing you can do but wait.
