A freely available script created by BIT for notifications in Fivem.
https://discord.com/invite/qApkS3ypxs
from client
TriggerEvent("bit-alerts:sendAlert", "check", "Success", "This is an success notification", 5000)
from server
TriggerClientEvent("bit-alerts:sendAlert", playerID, "check", "Success", "This is an success notification", 5000)