Teleportation means taking something apart and sending the details of it to another place, and then rebuilding it.
Telephones already "teleport" sound waves.
They take the original, measure it and send those measurements down a wire, where a loudspeaker recreates the sound wave.
Could a human be teleported?
There are 10,000 trillion trillion atoms in a human body.
Unfortunately, we can't know for sure exactly where an atomic particle is AND how fast it's going.
If we can't know both these things, we can't make a proper copy, and if we can't do that, there'll be no teleporting.
Scientists have managed quantum teleportation. They sent a beam of light one metre away from where it should be.
It's not exactly Star Trek, but its getting there.