Why did my refund show $1450 more when I opened turbo tax a few months after e-filing? I didnt recieve covid unemployment

The unemployment credit is for any unemployment received in 2020, not just for a COVID related Pandemic Emergency Unemployment Compensation Program.   If you received any 2020 unemployment and filed before Feb. 23, 2021, then you will receive the credit.  

I didnt recieve any unemployment at all in 2020. I worked the whole pandemic

In that case, something is either wrong with your return or with the way the IRS computed it.  You should receive a letter soon advising you or the change.  You can also telephone the IRS and ask for an explanation.