The transmission is broken. Take it to a shop.
Reverse and forward gears
reverse drum inside of trans is stripped out the fix is teardown unit and replace with abeast drum from transtar
If this is an automatic transmission, more than likely the transmission is on it's way to the junkyard. Usually failing transmissions lose reverse first, then the higher forward gears - last will be the lowest forward gears.
3 forward, 1 reverse
Forward and reverse. It's an automatic
A Super Beetle with a manual transmission has four forward gears and one reverse. A Super Beetle with an Autostick transmission has three forward and one reverse.
Burnt forward clutches/ The forward cluth pack is stuck/welded together.... You need a overhaul...!
YOU BETTER FIND IT!
It has 16 forward and 8 reverse.
6 or usually 7 forward gears and 1 reverse, though this is rarely used.
Inspect your brake pads. I would suspect they are worn out.
do you have all forward gears? if yes, you have broken reverse gear (one turning the spin into reverse) in the transmission, if you miss also some forward gears it shifts rough, tranny is to be rebuilt... either way it's expensive fix