The sign for "count" uses an "F" handshape on the
dominant hand. The base hand is in a
"flat" handshape. If you are right handed, the tip of the right index finger and thumb touch
the palm of the left hand (near the heel of the palm) and then slide forward
twice.
COUNT:



Here is a side view of that sign:



Notes:
If you add the "person affix" at
the end of this sign it means "accountant."