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I think it was over a thousand one way attack drones used, not 500, which does work out to 100 a day. Arash 2, Shahed 136 and 238. They just weren't effective, even the jet powered 238 ones were almostb all shot down, some even over Iraq. The distance between Iran and Israel is too big, the drones are too slow, and the US has gotten very good at intercepting them. Those missiles previously sent for Ukraine are actually laser guided Hydra rockets, called APKWS. One F-15E fighter jet can carry 42 of these APKWS rockets, along with 8 regular air to air missiles, for a total of 50 engagements. These were deployed to Jordan to defend Israel. Ukraine has no fighters that can use these, and are limited to ground launched systems.

Modern fighters and AWACS have much better look down radar capabilities (and look down shoot down for fighters exclusively) and clutter rejection than Vietnam war era jets, making nap of the earth low altitude infiltration much more difficult for Iran than Vietnam. Any Iranian air attack would have been a suicide mission, and Iran did the right thing not to engage and have their very limited air force wiped out, it would've made no difference in the end. No AWACS aircraft really hurts Iran here as pointed out. With Israel having a monopoly on airborne radars, it was actually Israel that used geography against Iran, using the mountains in the Northwest by Tabriz to shadow them from Iranian ground based radars, and using the Caspian sea to fly around air defences in the centre of the country.

F-16s and F-15 would be carrying 5 extra stores of fuel, 2 conformal fuel tanks along the fuselage, and 3 external fuel tanks taking up hardpoints/pylons. However, an F-16 in this loadout can still carry 8 SPICE-250/GBU-39 glide bombs, or 2 SPICE-1000 or 2 2000lb JDAMs/SPICE-2000. An F-15 can carry double that. This is still a lot of ordinance. The F-111s that destroyed over 1500 Iraqis tanks during the Gulf War only carried 4 GBU-12 500lb Paveways each. With the improved precision (no need for 500lb bombs anymore) and massively improved range with glide bombs since then, 8 SPICE 250s or GBU-39s is double the payload, and covering a much larger distance with modern targeting systems/pods and range. GBU-12 had a maximum range of 15km, SPICE-250 and GBU-39 have a range over 100km, and can still hit moving targets with ease. This massive increase in effective coverage radius and area coverage is what made TEL hunting (destroying ballistic missiles on the ground before being fired) feasible now, when it was a complete failure during the Gulf war.

The Delilah cruise missile was used, but mainly for taking out Iranian air defences thanks to it's stand off range of 250km and ability to loiter and relay targeting co ordinates back to the launch aircraft, so other systems can then hit all the targets spotted by Delilah on the way to it's main target. It only has a 30kg warhead and bulky datalink pod that takes up a valuable hardpoint slot, so it wasn't used much outside of that. A lot of SPICE glide bombs and JDAMs were used. The SPICE glide bombs can make use of human in the loop TV guidance, the person in the second seat of the aircraft van effectively pilot the bomb from a first person perspective, so a lot of people were confusing this FPV footage for Delilah cruise missile or drone footage. The SPICE glide bombs (1000 in particular, unsure of 250) use the same guidance interface as the AGM-142 Have Nap/Popeye missile, so if you see any FPV strike footage from this targeting interface, it's most likely from a SPICE 1000 glide bomb, maybe a SPICE 250 or Popeye, but definitely not a Delilah cruise missile or FPV drone. The footage of the strike on the inactive Arak heavy water nuclear reactor made use of this targeting interface, so most likely a SPICE 1000.

Arak footage:

The Delilah cruise missile uses a different FPV targeting interface (very green), shown here:

As for ballistic missiles and interceptor numbers, too much unknowns to make an accurate estimate. But I do think the situation was more critical for Iran than Israel, as shown by the last waves of attacks before the ceasefire. 6 waves of ballistic missiles fired, and only one hit. Is it feasible to continue a war in this way?