Why did my Federal and State refund amounts change when i click on amend my 2020 return? Is this the new Amount after the $10,200 unemployment credit?

If you did not make a paper copy of your original return before or just after you filed,

your original return is gone and there is no way to get it back.

Generating a correct TurboTax Form 1040-X for e-File, in these circumstances, could be difficult.

You will have to rely on and work from memory.

OR
request a transcript of your return from the IRS.