I can't think of a way to do this from command.com directly, but you could write a short .COM file GETQ.COM:

1C:\>debug getq.com
2-a
3	mov	ah,1
4	int	21
5	sub	al,51
6	jz	10a
7	sub	al,20
8	mov	ah,4c
9	int	21
10
11-r cx
12:e
13-w
14-q

When you execute GETQ, the ERRORLEVEL will be 0 if they hit q or Q, and something other than zero (i.e. if errorlevel 1 ...) if they pressed anything else.

ECHO Q. abort
ECHO press any key to play
ECHO.

getq.com
IF ErrorLevel 1 GOTO :CONTINUE
IF ErrorLevel 0 GOTO :END

:CONTINUE
prince megahit

:END
worked, thanks, this was a unbelievable way to achieve the effect of any key press
what if errorlevel is 2 or 3, so i tried below
*****************************************
getq.com
IF ErrorLevel NEQ 0 GOTO :CONTINUE
GOTO :END
:CONTINUE
-----------------
getq.com
IF NOT ErrorLevel 0 GOTO :CONTINUE
GOTO :END
:CONTINUE

both didnt work. i forgot old DOS syntax
****************************************

lets say this is a file abc.txt
-a
mov ah,1
int 21
sub al,51
jz 10a
sub al,20
mov ah,4c
int 21

-r cx
e
-w
-q

is there a way to import this abc.txt? i know there was a way
maybe like debug abc.txt which will produce abc.bin and rename abc.bin to abc.com or something
or like exe2bin.exe abc.bin
you might as well show me if there is a way
i couldnt find it in internet

I think this should work:

1@echo off
2cls
3choice /cabcdefghijklmnoprstuvwxyz0123456789q /n "Press Q to quit, any other key to continue"
4if errorlevel 36 goto quit
5
6:continue
7echo Pressed any key
8goto eof
9
10:quit
11echo Pressed Q
12
13:eof

Of course this works only for the alphanumeric keys so space, alt, ctrl, etc are not "any key" in this case.

@ECHO OFF
CLS
ECHO ==================
ECHO Prince of Persia 1
ECHO ==================
ECHO up + left = single left jump
ECHO left / up = run and jump to the left
ECHO SHIFT = walk/hang
ECHO.
ECHO SHIFT = draw and attack
ECHO SHIFT + up = block
ECHO.
ECHO SHIFT L = next level
ECHO SHIFT T = add lives
ECHO.
ECHO CTRL G = save
ECHO CTRL L = load only at intro
ECHO CTRL Q = quit
ECHO.
ECHO CTRL A = restart
ECHO CTRL R = new game
ECHO ====================================
ECHO.

choice /C:abcdefghijklmnoprstuvwxyz0123456789q /n "Q to quit or any other key to continue"
IF ErrorLevel 36 GOTO :END
GOTO :CONTINUE

:CONTINUE
prince megahit

:END

i mostly use ESC, SPACEBAR, ENTER area or just dropping my arm on keyboard somewhere, i dont wanna slightly lift my arm and reach to any specific key. it is nothing like 1/1000 actions, however, when i do this 1 especially, my brain receives a slightly dull aching signal from my damaged shoulders at times, saying to me like save your muscle for a better use and fun in which to make me forget dull ache.
i will keep the batch as backup. thanks for a help