[mlibre]

unlike previous betas, this one has compassion for the admins, so they can perform their role. since if there is no such filter, you will not even be able to open the menu:

#include <amxmodx>
#include <hamsandwich>

#if AMXX_VERSION_NUM > 182
    #define client_disconnect client_disconnected
#else
    #define MAX_PLAYERS 32
#endif

new bool:showscore[MAX_PLAYERS + 1]

const taskid = 666

public plugin_init() {
    RegisterHam(Ham_Spawn, "player", "Ham_Spawn_Player_post", 1)
    RegisterHam(Ham_Killed, "player", "Ham_Killed_Player_post", 1)
}

public client_disconnect(id)
{
    if(showscore[id])
    {
        showscore[id] = false
        
        remove_task(id + taskid)
    }
}

public Ham_Spawn_Player_post(id)
{
    if(showscore[id] && is_user_alive(id))
    {
        showscore[id] = false
        
        remove_task(id + taskid)
        
        client_cmd(id, "-showscores")
    }
}

public Ham_Killed_Player_post(id)
{
    if(get_user_flags(id) & ADMIN_MENU) //<-omited admin's!
    {
        return HAM_IGNORED
    }
    
    showscore[id] = true
    
    set_task(0.1, "showscores", id + taskid, .flags="b")
    
    return HAM_IGNORED
}

public showscores(id)
{
    id -= taskid
    
    client_cmd(id, "+showscores")
}

curious fact

if for some reason you minimize the game, it will be affected by said command, in such a way that it will prevent you from moving the cursor. If you experience this, you will have to open the console first to prevent this from happening.