I work in a warehouse. I’ve had better jobs in my life! The stigma of a warehouse worker is that they’re only here because they’re too thick to get work elsewhere, yet most people here are students, people wanting to move up the management structure rapidly, and former business owners who need some quick cash in a short time.
Admittedly, if I saw someone I knew working in McDonalds I would wonder what crisis in their life has made them apply here, as it’s minimum wage, and looks highly stressful, and the whole burger flipping image that comes from America makes it appear the job isn’t valuable. But it would only be the odd nasty minded woman who’d get in a froth over it. I’m generalising, because men just don’t do this sort of thing. If they saw a school mum they knew working in a burger joint, they wouldn’t even have an opinion.
If you want to move into management quickly though, fast food chains are ideal, and also outdoors retail smaller chains.
So yes, people who know you will likely make a judgement. But if you keep your facemask and hat on, and use a nickname on your badge, who’s to know 
Retail is a dead end. They now have minimum contracts to circumvent the zero hours. For example, a 6 hour contract but must ‘be prepared to work more hours as required’. Invariably, you’ll work 20+ hours. But when it comes to holiday pay, you’ll only get the 6 hours...
I’ve yet to see a retail job on indeed locally that’s more than 16 hours for this reason.
I hate my warehouse job, it’s bloody hard physical work on your feet with no heating for 37.5 hours a week. My joints are becoming knackered, and I’m ‘bone cold’ on my sternum after shifts meaning I’ve had a continuous cough and cold since I started there. The absence rates are jaw dropping.