Can I be saved if I'm a Muslim, Jew, or Buddhist?

1 John 2:23 Whosoever denieth the Son, the same hath not the Father : (but) he that acknowledgeth the Son hath the Father also.

You cannot have the Father without the Son. Can't. Doesn't even matter if you profess to worship the God of Abraham. If you don't love His Son, you don't have Him. If you don't believe in Jesus, you make God a liar.

1 John 5:10-12 He that believeth on the Son of God hath the witness in himself: he that believeth not God hath made him a liar; because he believeth not the record that God gave of his Son.11 And this is the record , that God hath given to us eternal life, and this life is in his Son.12 He that hath the Son hath life; and he that hath not the Son of God hath not life.

https://bibleprophecyandtruth.com/notes/canIBeSaved