What is the cause of the error "SyntaxError: expected 'else' after 'if' expression", and how to fix it?

Question

Python

Hello everyone, I'm writing a bot, but I don't know Python very well. Tell me what's the matter?

import discord
from discord.ext import commands
import sqlite3
import config
from config import settings

client = commands.Bot(command_prefix = settings['PREFIX'])
client.remove_command('help')

connection = sqlite3.connect('server.db')
cursor = connection.cursor()

@client.command()
async def cash(ctx, member: discord.Member = None):
  if member is None:
    await ctx.send(embed = discord.Embed(
      score_row = cursor.execute("SELECT cash FROM users WHERE id = {}", (ctx.author.id,)).fetchone()
      if score_row is not None # ошибка тут
        description = f"""У тебя , **{ctx.author}** вот столько балов!**{score} :polegar_para_cima:**"""
            else:
            # что делать, если такого юзера еще нет в базе?
           		cursor.execute("INSERT INTO users (id, cash) VALUES (?, 0)", (ctx.author.id,) ) # можно его добавить
            	description = f"""У тебя , **{ctx.author}** пока нет ничего! Но скоро будет!"""
        ))       
  else:
    await ctx.send(embed = discord.Embed(
      score = cursor.execute("SELECT cash FROM users WHERE id = ?".format(member.id)).fetchone()
      description = f"""У тебя , **{member}** вот столько балов!**{score} :polegar_para_cima:**"""
    ))

client.run(settings['TOKEN'])

Mistake:

File "C:\Python\bot.py", line 48
    score_row = cursor.execute("SELECT cash FROM users WHERE id = {}", (ctx.author.id,)).fetchone()
                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
SyntaxError: expected 'else' after 'if' expression

Answer 1

You forgot the colon on line 48, after is None
PS:

But I don't know much about Python. Tell me what's the matter?

Start with something simpler, like regular console applications.
The matter is that at you problems even in understanding of syntax arise.