What are the steps to recover some Ethereum I mined in 2018?

I mined ethereum in 2018 using a how to guide I found online, joined a mining pool, and set up a wallet. Over time I got some ethereum and then due to life circumstances had to stop.

Now here we are years later and I am trying to recover the eth to pay some bills and just get it transferred to a wallet that I can manage.

The challenge is that it has been so long I am really unsure what I am looking for here. I have access to the drive that has the wallet info on it, however I will have to locate my pass key which I should be able to locate.

My question is, what are the steps I need to recover the data? Will having access to the wallet folder help at all? If so what am I looking for in the folder that can help?

Thanks for any help, and I am so rusty at this that a step by step guide would be helpful.