It, most probably, will not taste the way you expected it to at the time you were brewing it. However, it may still be "good" beer in general. Unless you know of some precluding circumstance, (i.e. the airlock dried out or something) I would NOT throw it out! Look at it. If you don't see any spores or otherwise disgusting contaminates, smell it. If it smells good, taste it. If it tastes good, keg it. After its cold crashed and carbed up good, look at it, smell it and taste again. If all seems well, drink it up.
I, for various reasons, have had a beer sitting in the fermenter for months with no disernable negative effect. Yes. You may not have the same hop pungentness or maybe it will be more dry than to your liking but that, does not mean "bad beer." It is just not the exact flavor one had expected, in most cases. Still quite embibable though, hopefully.