According to Dynamic Concrete Pumping INChttps://www.dcpu1.com/blog/how-long-does-concrete-take-to-dry/, concrete will be ready to walk on in a surprisingly short time. Your concrete should be solid enough to walk on, without leaving any footprints, after anything from 24 to 48 hours. By seven days, your concrete should be cured to at least 70 percent of its full strength. You will probably be able to drive on it without damaging it, although you may want to hold off on rolling heavy equipment over it. In 28 days, you can treat your concrete as fully hardened.
According to Concrete Network https://www.concretenetwork.com/curing-concrete/, the entire curing period of concrete takes about a 1 month, but your concrete will be ready for use sooner. The drying time will vary slightly due to differences in the weather, concrete mix, placement and also the finishing techniques.
Concrete drying time chart:
|24 to 48 hours||people can walk on the surface|
|7 days||traffic from vehicles and equipment is okay|
|28 days||the concrete should be fully cured|
So if you want to be sure, you wait 2 days before you start walking on the concrete.