I bought 2 four inch pots of bush cucumbers. Each container has 3 plants in it, spaced VERY closely together--like all 3 of them within 2 inches. Do I try to separate them when I plant them in my raised bed, or do I just plant the whole pot of them, with space between each pot? Thanks so much for your help!

My opinion: do not separate. They are commonly planted in "hills" of three. Do allow plenty of space between each pot of them.

You plant things close together and, in toto, they will behave, and produce, as one plant with multiple vines. No big deal. One reason to plant multiples (I do routinely) is in case one or more croaks. If you want to risk damage by separating them, and if you're desperate for the productivity of three plants instead of one, then go ahead and try to do it.