I had 3 1080 ti in 2017~2018
It was a best, launched in Mar 10th, 2017 and you can make profit, almost 5 years after

Here you can find about profits and hashrate: https://whattomine.com/coins

You can mine not only ETH but another algos

I don't know if it's worth for you, depends how much are you going to pay, remember that is an used card, more than years of use, if you find a cheap one, maybe worths
There's no special configuration to run, the only thing is power, card will consume 180 to 200w


I'll give an example, 6700XT hashrate is 47Mhs on ETH, consuming 130w on the wall while 1080ti will do 42~43Mhs with 180~200w

Resume: if you find a cheap 1080ti, in good conditions you can make some profit.