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.
Forward and reverse. It's an automatic
3 forward, 1 reverse
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...!
It has 16 forward and 8 reverse.
YOU BETTER FIND IT!
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.
the clutch or clutches in the transmission are bad,even if changing the tranny filter helps the forward gears will not be right and quit again