With WeGolook… all you do it take photos of the entire vehicle inside and out and submit everything through their app. You need a smart phone, tire tread gage, yard stick and 12 foot measurement tape.
If it’s a dealer inspection you do it right there on the dealer lot. 15-20 min average time for one vehicle and you often will get 3 to 4 vehicles to inspect in one day. However one day I got an order for 9… it was a long day.
If it’s a dealership transport- you inspect the vehicle take photos at the customers home and drive the vehicle back to the dealership The time on that can vary but it averages 44-1hr. You drive to the dealership and they pay to Uber you to the customers home.
If it’s an insurance inspection you drive ti the customer inspect the vehicle, photo, measure and document the damages. This takes max 10-15 min
With product recalls. You go into the stores and collect the recall products and destroy them at home. You document all this with photos.
For Lemon Squad… you need a OBD2 reader and a tire tread gage. same as WeGoLook dealership inspections but you get to take the cars on a 5 mile or more test drive. They give you a checklist of things that you need to check and you submit and write a report about what you found. This one I like as I get to drive some sweet rides. 
The great thing is that you schedule according to your schedule.