Most lists of side gigs open with the pay. That is the wrong first question.
A gig that pays $25 an hour is worth nothing to you if it needs a car. Not if you do not have one. So ask the questions in this order.
1. What do you already have?
Write down four things. Do you have a car? A computer? A smartphone? Can you stand for two hours?
Those four answers cut most lists in half. Start there, not with the pay.
2. How fast do you need the money?
Some gigs pay this week. Some take a month to clear a background check.
If rent is due, that gap matters more than the hourly rate.
3. What does it cost you to start?
A gig that needs $200 of gear is not free to try. Neither is one that eats $50 of gas a week.
Take the cost out before you compare two rates.
4. What is bad about it?
Every gig has a bad part. If a page does not tell you what it is, that page is selling you something.
Read the downsides first. If you can live with them, read the rest.
Then look at the pay
Now the pay figure means something, because you know what it costs you to earn it. That is the number to compare.
Two places to start on this site. Try work a community service job with SCSEP if you are 55 or older and money is tight. Try type audio for Rev if you have a computer and type fast. You can also see every gig and filter the list yourself.