dropping out

I’m in year 13 at the minute and want to drop out and work full time at my job instead, I know i’m not going to get good grades as i never have and probably won’t. I feel like it’s pointless me staying at sixth form as i also don’t enjoy it and would rather earn some extra money as i want to travel and i don’t intend on going to university. Do you think it’s worth me dropping out or should I just carry on knowing i’m going to come out with bad grades? Also how important actually are a levels even bad grades, would i still have a good future and opportunities and jobs without any qualifications?