In my first attempt in all grain brewing i made an IPA. the OG was 1.050 and currently the gravity is at 1.020. the last time checked, which was 4-6 days ago it was also at 1.020. Isnt the gravity too high to be finished yet? I’m worried i may have ruined my first batch of all grain beer 
Any help would be appreciated.
Jason
Please post the specifics of your recipe so that we can further assist you.
grain bill
mash temp
yeast and quantity
pitching temp
ferm temp
etc…
I wouldnt say it is “ruined” just yet. I have had a couple batches finish pretty high, and they werent the best tasting beers, but they were tolerable. You can try rousing the yeast by heating it up a few degrees or pitching some more yeast. Im sure someone else will have better advice, but that is just my 2cents
grain bill - 10# US 2 row, .75#Caramel Pils, .25#Briess Caramel 120
mash temp - 153 for 60 mins
yeast and quantity - US-05, didnt use a starter but fermentation was chugging along 12 hours after pitched
pitching temp - around 68-69
ferm temp - ambient 64-65 beer was around 67-68
sounds like you did everything okay - are you positive your thermometer is reading properly? have you calibrated it recently?
I would expect that grain bill to have no problems attenuating very well with US-05 given a 60 min 153df mash.
well ill mess with it a bit. its a newer digital kitchen thermometer i picked up.