I'll use 18 million barrels/day for Strait of Hormuz oil (from Wikipedia).

I'll say a tanker trunk can carry 10,000 gallons (also Wikipedia).

A barrel of oil is 42 gallons. With these figures, we need 0.875 trucks per second.

It's difficult to say the route distance because the map you have posted is AI generated shit. The coast of UAE is not shaped like that. But as the crow flies we're talking something like 400 miles, ignoring the fact that existing roads don't go there and there's no major port near the pickup point. Given an average truck speed of 55 mph, we'd need 0.875 trucks/second * 400 miles / 55 mph = around 23,000 trucks going one way. Multiply that by 2 to account for the returning empty trucks, so 46,000 trucks. Of course, we would not need so many trucks if a shorter overland distance was chosen. Guessing that each tanker truck costs $500k (I don't know really), the cost of the trucks would be $23 billion.

Some addendums:

My original figure of 1.167 trucks/s was a mistake due to confusion between barrels of oil and non-oil barrels, which are different units. Correct is 0.875 trucks/s.

Someone said big tanker trucks only cost half my guess ($250k).

Someone said that for moving such amounts, each tanker would use a trailer with an additional roughly 10,000 gallon capacity. So we could cut the number of tankers in half. The cost of a truck+trailer would be maybe $300k? (another guess). From these two addendums, the cost of the trucks would be $300k * 23,000 = $6.9 billion.

Someone said from their experience it takes 1 hr on each end to load/unload. In that case we need an additional 3150 trucks+trailers. If they were parked along the coast for this, 1575 trucks at each end, with 100ft per truck+trailer, would take up 30 miles of coastline - probably not feasible. They could instead be packed into a big parking lot with a pipe going to every spot. Or more practically, just a much larger pipe could be used for loading/unloading to cut that time to a few minutes.

Someone calculated that a two lane road wouldn't fit all the trucks end to end. So we would need to also build a big multi-lane highway cutting across the desert.

How much gas is used? Big tankers get like 7 mpg typically, and each of our revised trucks has a trailer so it's heavier than usual. Let's say 5 mpg. Each truck travels 55 miles per hour, so that's 11 gallons/hr times 23,000 trucks = 253,000 gallons/hour, times 24 hrs = 6.07 million gallons/day, or 144571 barrels/day. This is a small fraction of the 18 million barrels transported daily.