This is one of my female guppies and I suspect she’s pregnant I have a plant hideout along the wall and she’s been hiding in it since I put it in there and I want to be prepared how far along does she seem ?
Yes, that is most definitely a pregnant guppy. You should expect some fry soon! If you'd like to keep them, I'd suggest putting her in a different tank by her self. Otherwise the others will probably eat them. Some might survive, (like mine) but most of them will get eaten.
Definitely pregnant as others have noted. Be aware that guppies (like most livebearers) can store the sperm of the male they mated with for up to 6 months --> so you will likely have batch after batch of babies.