Q.what kind of plant this is?
I don’t know what kind of plant this is and would like to find out so I can try to figure out why the leaves are yellowing. Help with that would also be wonderful! Please feel free to contact me for any additional information.
Thanks!

You have a Kalanchoe plant. The yellowing leaves can indicate a watering issue; too much or too little.
Here is a link to help refresh you on the care requirements.
https://www.gardeningknowhow.com/houseplants/kalanchoe/growing-kalanchoe-plants.htm