Kindly reference the following link(s):
A person who does not Pray 'AT ALL' is a Kafir
Whats ruling on a person who does not pray 5 times regularly
A person who prays 3 times a day or misses 5 daily prayers, is he still a Muslim?
Does Allah answer the dua of a person who does not pray?
Is a Person Kafir if he abandons salah / prayer intentionally?
According to concensus, if a person stops praying (even a single prayer) is he kafir
Allah forgives who have mustard seed of Iman in their hearts but who don't pray are in hell forever?
He doesn’t pray at all, prays Friday on & off Is he considered muslim, can wife live with him?