You have to have a feel of the situation. When a woman is showing high interest you will get physical quicker than a dude she has low interest in.
There are women I got physical with without any date, some on the first date, some 2nd date or some 3rd date.
After 3rd /4th date with no progress, its probably better to end it.
I’d say 2nd date.
I wouldn’t even wait for a 3rd.
If she isn’t touching any part of you during the date or it’s a side hug then you know it’s not happening.