Hi and welcome! there are many opportunities to come and live and work in the UK in the short and longer term. If you plan to go to university, many schools have study abroad programmes in the UK (usually scotland and London, but there are others). Also, you can get a Bunac visa (
www.bunac.com ) that will enable you to come and work for up to 6 months. You can also look into becoming an au pair after high school and work as a nanny with a family for a year.
If you want to come and live and work permanently there are a few options available:
1. get sponsored by an employer to work and live here (difficult to find a job from there to sponsor you, but not impossible)
2. come through an ancestoral visa --so someone in your family being a british citizen
3. come on a fiance or marriage visa to a brit or other EU citizen.
I am sure others will give you more details on types of ways of coming over.
Welcome
Kat