Teenagers need to have some money. If they don't have a job, family need to provide them with some and I don't think that's unreasonable.
Generally speaking, I would keep the money they get separate to the general contribution to the running of the household. Teenagers are old enough to appreciate that a team effort is needed and whilst Mum and Dad might do more than a fair share, they also need to play a role. So I agree that it's good for them to do more than just stuff to benefit themselves (their own rooms or laundry etc) but to make a contribution to the house too.....and not for money. The adults in the house don't get paid tool ad the dishwasher and the teens are equally memebers of the household so don't need paying either.
I don't like the idea of kids or teens feeling entitled to money per task. I've known some who if asked to mow the grass, instantly want to know how much they will get and then might decline. Growing maturity is about recognising that households don't just run themselves and everyone needs to play some kind of role...without financial reward.
Lockdown has been good in our house for the DC learning some new skills we were just too lazy previously to teach them. So they have learned to know the grass and some extra cleaning skills. And all these things are pretty straightforward really and actually the kids are quite pleased with themselves that they can do them - they think it's a bit embarrassing if a 14 year old can't change the bed or clear up the kitchen.
So in our house, the DC have some basic things they are expected to do weekly like sorting out their laundry and changing their beds, plus are expected to do a couple of jobs each which help the whole house....like cooking a meal or cleaning up the kitchen after a day of lockdown, or mowing the grass or doing and hanging out the laundry. They receive their weekly money straight into their bank account £10, but aren't as yet big spenders and we give them extra if needed for outings etc.
If a big job came along, like decorating a bedroom or tidying out the whole garage etc, we might see if either was happy to help out with a couple of hours. Fortunately, they have an attitude that they will help us out, because they know that we are frequently putting ourselves out for them, in all kinds of ways quite willingly...and they are mature enough to see we all benefit from being helpful to each other. I've known parents pay their teenagers for doing a day of pretty heavy labouring or garden clearing etc - sort of one-offs, where the teenagers help has made a big difference, amd wouldn't have a problem with that.
I don't like it when teenagers have got to the point of thinking it is the job solely of adults to run the house and their sole job as teens to do school work and enjoy themselves. It's immature and often I think it has in some unwitting way been encouraged by parents. Being a team and working together and seeing home life as a team effort really matters.....realise it's a journey for kids and teens to get to that point of maturity in thinking, but showing as an adult that tedious tasks are just a reality of life for all households and that all memebers of a household are literally members, rather than there being some huge distinction between adults and children really helps.