
Certified GKH Gardening Expert
Disregard them, and ignore. The fruiting body is just a tiny portion of the mushroom. The rest is a mycelial network that is under ground or out of view. Killing it would pose more risk than the good it could do. If your soil is suitable for the plants, and not the mushroom then they will not be able to grow. These will grow on wet and decaying wood, mostly. They are breaking down the wood to make the nutrients available in the soil.

Certified GKH Gardening Expert
This is one of hundreds of Mycena mushrooms. Generally, most are regarded as harmless, but are not edible.
They are rotting wood remains in the soil. Though they are not harming your plants, they do signify that the soil is quite drastically overwatered. The environment that these require will be very unsuitable for plants, so seeing them means that the soil is oversaturated.
Make sure, regardless of temperature, that you only water when to soil is completely dry down to about 3 or 4 inches. This will prevent saturated soils.
If you must compensate for heat, erecting a shade cloth during the hotter portions of the day will be a good way to go about this.
If you cannot control the water level in the soil, I would recommend adding plenty of biofungicide to the soil. This can help mitigate some of the effects of saturated soils.
Here are some articles that will help:
https://www.gardeningknowhow.com/special/organic/biofungicide-information.htm
https://www.gardeningknowhow.com/garden-how-to/watering/watering-garden.htm
https://www.gardeningknowhow.com/garden-how-to/info/shade-cover-tips.htm
https://www.gardeningknowhow.com/plant-problems/environmental/dealing-with-heat-stress.htm

Thank you, do you have any recommendations for what I should do with mushrooms? I will let soil dry out and install shade