I also want to say only one drop blood came out. Then I took him in dry place.
It's impossible to tell if an animal - especially a reptile like a turtle - has internal injuries from it's behavior, unless it's currently dying. A vet must examine the animal to find internal damage.
That "only a single drop of blood" came out of a wound can mean 2 things:
- Either the wound didn't bleed very much
- Or the rest of the blood pooled beneath the shell because it couldn't flow out. In that case it's impossible to tell how much bleeding there was and if it stopped or is still bleeding. You need medical equipment like x-ray or ultrasound to examine the wound.
Almost all animals hide injuries as much as possible, especially wild animals. In the wild, predators target preferably slow and defenceless prey, so old, young and injured animals are targeted first. To increase their chances of survival, injured animals have to hide their injuries from predators. Only if the injury is so severe that they cannot hide it any longer will they show any change in behavior. Unfortunately this often means that even a vet cannot help them anymore.
If you have the chance to see a vet, you should definitely do so as soon as possible. Even during Corona lockdowns many vets still open their clinics, but you may have to call in advance.
If there is no vet around, all you can do is give your turtle a calm place to recuperate with as little stress as you can manage.