Hello, I've begun to see a decent amount of mushrooms pop up in my garden around where I have a good chunk of my vegetables and am wondering if this is going to be a problem or if I can just leave them be. Also there has been what I see as white spots/withering on the leaves of my arugulas and would like to know if that's an issue as well and how I should address it. Thank you for any and all help.

Mushrooms are nothing to worry about, they are not harmful for your garden. I wouldn't harvest them obviously. My guess is the fungus growing on leaves is a potential problem, but I'm not positive on that.

They look like parasol mushrooms, a common entity in potting soil.