Suck 2000 dicks for a nickel each.

Pawn shops or jewelry stores that buy stuff might be options

Odd jobs like washing dishes at short staffed restaurants might also get you a day’s wage if you’re lucky to know some people in the business

Sell feet pics to degenerates.

The fact that you want to spend 100 bucks that you dont have on something you don't need probably explains the lack of that 100 bucks in the first place.

This has to be a bait.

Sell your plasma / blood?

If you are an average web developer, here is a scam that I discovered recently:

There is one guy who makes the shittiest web sites for local communities, cities, or nonprofits. The kind of web site that no one reads, and contains a few articles or piece of news. This asshole charges each client up to $2000 a month for "maintenance" which is mostly "add an article every 6 months."

It's the kind of job that you could do with any blog subscription (like WordPress or Ghost) for $20 a month, and you could charge it $500 or less. 1 client, $500 every month for five minutes of work, forever.

If you can convince people that your method is cheaper and better, you could be a billionaire overnight. Yes, I'm bitter.

Credit cards are used for such things but don't buy stuff if you don't have the money for it.

Craigslist odd jobs seems like a easy way to find something and that pays under the table.

If you have a lawn mower and you're willing to interact with multiple people, you could go around and see if anyone is in need of their lawn mowed this week.

-- Adding to this, if you have a weed-eater or edger, you could see about doing their edging instead or as well.

Do not buy things you cannot afford unless it is an extreme necessity for you to continue living your life (like a car).

Check out Temp services though. Many of them have apps on your phone you can use and you can sign up and work within the same day or two days. Easy quick money. Just make sure you can pass a drug test.

You can sign up for surveys. Sign up for them until you get one, could be in 24 hours, might take a bit longer. There are sites that have endless like corpo surveys for their stupid products, often on zoom or something.

turning a trick?

In 24 hours is probably not realistic

Unless you can/want to do odd jobs, door to door sales pitch (like mowing the lawn), most jobs will have a brief delay (paperwork).

Your easiest bet is credit card (no interest needed if you pay it off) or buy now pay later services (very predatory if you dont pay back in time)

You could also ask a friend/relative but that will put a lot of burden on your relationship with them even if they are willing.

Try odd jobs for neighbor or friends. Fix pc or software they need. Little jobs can add up quick. Do things they can't do themselves.

Find the "cash jobs" Group on your local FB and do a few hours of pick-up yard work, etc.

Day labourer. Easy to get started but it's pretty hard work.