In such situations, I find Astrometry.net particularly helpful. Feeding it your image, I got this result:
Of course, the stars Pleione, Sterope, and Taygeta are enough to identify the Pleiades.
While in this case it's fairly easy to identify the Pleiades by inspection alone and verify this, for less recognisable cases Astrometry.net is a very handy tool. ...
Yes, those are the Pleiades. The form corresponds exactly to the photo below:
(source: Star-Gazing - the disk below the Pleiades is Venus, this is a photo from April)
As @theWrongAlice says, they're not a constellation, but they are part of Taurus (the Bull).
If it was rather small, I suppose you were looking at the Pleiades, which is an open star cluster (not a constellation).
Take a look at this web application: https://stellarium-web.org/
You can set a time and location and find constellations and other objects really easily.