is this a weed or a flower to be?
This looks like it might be garlic mustard (an invasive weed). Garlic mustard leaves are smooth and mostly hairless. Also, if you tear a leaf, the garlic mustard will have a garlicky/oniony scent.
Here is our information about garlic mustard, https://extension.umd.edu/hgic/topics/garlic-mustard
This fact sheet about garlic mustard mentions some of the common look-alike plants,