Put it in the incubator and let it finish absorbing.
If you have a small cup stick it in the cup so it doesnt move around too much.
Don't let another chick find it whatever you do.
Oh. That's just some yolk by the way, probably should have started with that.
As far as concerned... That doesn't look terrible but of course it's not completely healthy.
I believe it will either absorb or dry up, and then you want to get the chick to the brooder. Try to get it to eat and drink, the first day is the highest chance of passing, but could go lethargic and pass in up to ten days i believe?
https://www.backyardchickens.com/threads/unabsorbed-yolk-sack-help.463890/
https://www.backyardchickens.com/threads/help-with-an-unabsorbed-yolk-sac.469499/