Q.lily
What king of plant is this and how much bigger will it get? Thanks, Lisa ?
This is a spathiphyllum or peace lily and has white flowers. It looks fairly large now. It probably will not get much taller, except the flowers, but will get wider if the pot will allow for this as it is a clumping plant. Usually they are potted in up to 12" pots and sold as houseplants but I have seen it in in greenhouses where the clump was more that 3" across. Bright diffused light, but no direct sunlight. Let the plant dry lightly between waterings as it doesn't do will with excess water or drying out too much. Enjoy
This looks like a Peace Lily.
Though the plant will get larger it is relatively slow growing.
https://www.gardeningknowhow.com/houseplants/peace-lily/peace-lily-plants.htm