Can you put a variable in the panel frame?
For example

PANEL initchoice2
LABEL "<B>Stats</B><BR>"
BUTTON Strength, " + $AGENT.Strength + “, "ADD 1 to you'r strength", onChoosestrength
IMAGE 32x32 icoWarrior.gif
LABEL "+ $AGENT.Strength + "

To show a players current stat (Strength) in or be side the button to add Strength?

This won't work. Reason for this is that the panel, normally, doesn't update.

All variable values should be displayed in the scene frame.