This is a fun mod, but I realize that development is halted atm, so since I'm an Uber Eats driver myself, I'll provide some feedback as well as a general idea of how Uber works to hopefully either inspire the author should they continue, or inspire someone else should they decide to make a similar mod in the future. As a disclaimer, I'm only an Uber Eats driver. I don't run passengers, so I can only speak from my experience running deliveries, but it's most likely almost identical to ferrying passengers.

Right now, you activate this mod by calling the Uber contact, which then immediately places a ped somewhere close by for you to pick up and then deliver to a randomly-determined point nearby. It's a serviceable approximation of what I actually do, but there are many ways it can be improved.

When you sign up as an Uber driver, you download an app called Uber Driver. On the Uber Driver app is a heatmap, which is a map of your city that shows the busiest areas of town at that moment. Busy areas are either highlighted in gray, gold, orange, or red depending on how busy they are. Gold areas typically offer an extra $1 per delivery (at least in my town), orange areas an extra $2, and red areas usually add $3 or more per delivery as a way to get you out there running jobs.
Now, as an Uber driver, you can go online or offline at your will. When you're offline, you're not able to receive requests for new jobs; you have to be online to get those. The best tactic is to remain offline until you get to a really busy part of town, and then you park somewhere, go online, and then you *wait.* You typically don't get a job right off the bat. As boring as it sounds, most of the job is waiting for work, especially on weekdays when people are typically at their jobs and don't want to wait on their food to be delivered. When a job offer pops up, you can accept, decline, or ignore it. If you're a proficient enough driver, you also get to see the route. Before accepting a job, you'll also get to see the distance, the estimated travel time, the name of the pick-up location, the drop-off address - and most importantly, the total fare, including the expected tip.

Now that we've got all that out of the way, what happens when you accept a job? Turns out that the Uber Driver app has built-in navigation, so it'll take you right to your pick-up location, and from there to your drop-off (something this mod already does, so props there). However, rather than incentivizing speedy delivery, which is what this mod does, Uber instead compensates you for the amount of time you take to finish the job. That means that it really is in your best interest to drive safely, obeying all the laws, even if it means you take a bit longer than expected to finish a given job. However, in order to combat drivers intentionally taking ages to finish deliveries, both customers and businesses can rate a driver's performance. Drivers with lower ratings seem to get fewer job requests, which obviously impacts their earnings. So, tl;dr: gotta be quick, but not too quick.

Now I'm not sure how much of that can actually be implemented into GTA5, but again, hopefully this inspires someone to make a better Uber Driver mod. What we have now is an okay approximation, but it definitely could use some work. Feel free to contact mee if you need further detail or clarification!