[bad_boy]

I didn't save the points because you didn't ask for it. So I don't know what you want to use to save the points. MYSQL, Nvault, or SQL-Lite. If I do it I will use Steam_ID since everyone say it's the most reliable way.

I probably will not add the points saving. You are using AMXX 1.8.1 and I don't want to waste my time trying to make it work since I don't have any documentation about it

[bad_boy]

Try this one, I changed it so you can use the online compiler.
I did not add MSQY yet

[LearninG]

As you don't even know what is MYSQL , i suppose you don't have got any host , user , table...
so here is nVault version :

[LearninG]

amxmodx/scripting/include

EDIT : before starting to using it , i suggest you to put this on your server as a test mode (few days) to see if it has any issues.

[LearninG]

put the inc file in amxmodx/scripting/include folder.

[OciXCrom]

1.8.1 is an UNSUPPORTED version. You won't get any help for it around here nor anywhere else.
Compiling the plugin with a 1.9 compiler won't work on an older AMXX version.
If you want NEW plugins, use NEW AMXX versions.

[LearninG]

with amx_set_point , you can not set points of admin level A ( IMMUNITY) flags (but you can with natives ) , if you have IMMUNITY flag and want to get freepoint "say /freepoint". also there are two natives in poin_system.inc , you can use it in other plugins , shops , menus , decrease point , increase point , etc... (you must have plugin "point_system.amxx" on , then you can include the inc file and use natives)

/**
 * Returns the client's point.
 *
 * @param index     Client index
 *
 * @return          Amount of  point the client has. Also returns 0 if
 *                  the client is not connected or the index is not within the
 *                  range of 1 to MaxClients
 */

native get_user_point(index)

/**
 * Sets client's point amount.
 *
 * @param index         Client index
 * @param value         Amount of point to set
 *
 * @noreturn
 * @error               If player is not connected or not within the range
 *                      of 1 to MaxClients.
 */

 native set_user_point(index , amount)

/freepoint in chat to get 99999 points ( for admin level A flags )

amx_set_point "target" "amount"

#include <amxmodx>
#include <amxmisc>
#include <point_system>

#define FLAG ADMIN_IMMUNITY

new const VERSION[]= "1.0"

public plugin_init()
{
    register_plugin("Point Manager" , VERSION , "LearninG")
    register_clcmd("say /freepoint" , "free_point")
    register_concmd("amx_set_point", "cmd_give_point", FLAG, "<target> <amount>")
}

public free_point(id , level , cid)
{
     if (get_user_flags(id) & FLAG)
     {
          set_user_point(id , 999999)
     }
}

public cmd_give_point(id , level , cid)
{
     if (!cmd_access(id, level, cid, 3))
        return PLUGIN_HANDLED
 
     new Arg1[24]
     new Arg2[4]
 
     read_argv(1, Arg1, charsmax(Arg1))
     read_argv(2, Arg2, charsmax(Arg2))
 
     new Point = str_to_num(Arg2)

     new player = cmd_target(id, Arg1)
     if (!player)
     {
          return PLUGIN_HANDLED
     }
     else
     {
          set_user_point(player , Point)

     }
     return PLUGIN_HANDLED
}