Hard to answer, your question is so vague
What's the model of your GPUs?
If you mined some LTC, I think it's old enough to not worthing mine anymore, but it's good if you know which model is your cards
LTC and Bitcoin are not mined with GPUs anymore, only asics (specialized machines to mine)
And with GPUs we can mine a lot of coins, the most important and profitable is ETH, and ETH is not going to POS in a few days as you said, it'll took some time, months or even years...
To mine ETH your cards have to be at least 6Gb models, which I doubt it is, but depending on models, you can mine ETC or another small coins