How to access old wallet

I mined a small amount of Eth around 2017(I think), I still have the downloaded wallet file but have since removed the ether blockchain app (was several 100 Gb and growing back then).

Is there a way to use a website based program or other app to be able to access the wallet? I’d prefer to not have to download all of that again, I remember having to uninstall it and start over because it wouldn’t download whatever updates it needed.

Also, any recommendations for how to convert it into $USD? Have some unexpected expenses that came up.

Thanks