There are many transcription sites online that you can work on, All you need do is to create an account and take a pre-test to get approval to start working with the site.you can try these sites.
Transcribme: This site pays up to 33cents per minute of transcribing or $20 per hour.you will have a bonus of $2 if you're accurate.payment is by PayPal and minimum withdrawal is $10.
Fiverr; This is a freelancing site that you can get clients looking for those with transcribing gigs.So you can sign up and put up your skills and set your price too .Payment here is through PayPal and payoneer.
SEOclerks. This is another freelancing site that transcribing jobs can be gotten. So sign up and set up your profile to start getting jobs.Paypal is via PayPal.