A college course- there are various diplomas you could do to support you within this role.
An apprenticeship- you could undertake an apprenticeship for this role.
Working towards this role- you could get an entry level job and work your way up.
You could do a nail services technician intermediate apprenticeship.
This typically takes 12 months to complete as a mix of learning in the workplace and off-the-job study. This is dependent on the company and you will usually need to complete and pass an interview.
https://www.ucas.com/apprenticeships
https://www.gov.uk/apply-apprenticeship
https://www.betterteam.com/nail-technician-interview-questions
https://www.employmentking.co.uk/job-interview-questions/top-10-nail-tech-interview-questions/