Plants lovers help !!

I don’t know where else to post this so hoping here works!

This is my friends plant I’m looking after while he’s away at home. The plant (his name is Lester) is obviously dying, maybe even dead, (I didn’t kill him, I only just got him!!). He has enough water and when I googled about it, it kind of looked like he’s got too much sun but I’m no plant expert 😂 I was wondering if anyone could tell me if there’s any possibility of reviving him and if so, what I can do! Thanks everyone!