JustAnswer
JustAnswer is one of the most highly-trafficked websites for paying people to answer questions.
It's one of the best places to get paid to share your knowledge on a subject, in many cases related to your profession.
You get paid 50% of what customers are willing to pay for your answer as your commission.
You may be able to make between $20-$50 per question you successfully answer.
Also, if you want to be paid via PayPal, that is an option.
Studypool
At Studypool, you can earn up to $7500/month via PayPal, which would be up to $43/hour if you worked 40 hours/week.
You get paid for tutoring people and answering their questions in certain academic subjects.
You can get started with no experience, work from home worldwide, and make your own schedule.
Also, they only keep around 20% of the money you are paid for the platform fee, which is one of the lowest ones you'll ever see!