[Kindred]

pawn Код:

public OnPlayerDeath(playerid, killerid, reason)
{
    if(killerid != INVALID_PLAYER_ID) SetPlayerScore(killerid, GetPlayerScore(killerid) + 1); //If not invalid killerid (not a vehicle, etcetra), gets current score and adds one to the killer.
    GivePlayerMoney(playerid, random(30000 - 10000) + 10000);//Randomizes the amount of cash the person gets, 20000 - 30000
    return 1;
}

Untested, I rarely use randoms, and when I do, I look at examples. Found an example on the forums and edited it to your liking.

Explanation of the code is shown in the code.