The toilet appears to be clogged.......... Fill up a bucket of water from another source and gradually pour it into the toilet bowl. If water level starts to rise, stop pouring and use a plunger until clog is cleared. If this fails, the clog may have to be cleared with a rotating snake. If the water level does not rise, your toilet does not have a clog.
The tank will not fill up.........this could be one of a number of things.
Shut off valve turned off
Shut off valve or feed line clogged
Tank float or valve stuck..
"I'm not as green as I am cabbage looking"