This is a temporary fix but people have also had this last for years on their tires. Your mileage may vary.
Here is a screw that has punctured my tire and causing it to lose air.
I filled the tire with air before working on it but you can probably still do it with half pressure.
Try to spin and turn your wheel so you have access to the area over the screw, nail, or whatever it is.
I also jacked the car up a little to take some weight off the tire but still having the tire on the ground so it doesn't spin while working but you don't need to do that.
To fix this I bought a 10$ kit at Canadian tire
This is for tubeless tires and I do not know if it will work for other kinds of tires. It will probably say on your tire if it is tubeless or not.
It comes with a file for roughing up and cleaning the hole a bit, a tool for inserting the tire plugs and a pack of 5 tire plugs.
first thing you want to do is pull out what is causing the leak and then plug the leak with filing tool because It will start leaking fast.
I used a screwdriver and my fingers. you can also use anything else to make your life easier such as a vicegrip or pliers.
This one was easy to remove.
Here is the filing tool I inserted into the hole after removing the screw.
You want to push it in and out just a couple times. I did exactly 2. This will give the tire plug a rough surface to hold onto in the tire.
Leave it in the hole while you prepare for the next step.
Now you want to take one of the tire plug strips and thread it through the tip of the insertion tool and centre it.
Pull out the filing tool and stick in the tire plug.
You want to push it in without twisting until roughly 2/3 of the plug is inside the tire.
It might be a little difficult so to make it very easy I used a hammer.
Now you just pull the insertion tool straight out without twisting.
Last thing you want to do is trim off the excess. Try to do better than in this picture and get as close to the tire surface as you can.
If you want you can even take a black permanent marker or something and colour that ugly brown spot black.
Now just pump up your tires again and you are good to go!
Some other things you can do are:
use a torch or something to melt the plug onto the tire.
pump up the tire to the max inflation rating to see if the plug pops back out.