Every person can be saved who lives well and believes rightly.
Salvation comes by living according to the faith that a person believes. Belief in the Lord and love of Him is only possible with those who do what the Lord teaches in His Word. Jesus said:
"A certain lawyer stood up and tested Him, saying, 'Teacher, what shall I do to inherit eternal life?' (Jesus) said to him, 'What is written in the law? What is your reading of it?' So he answered and said, 'You shall love the LORD your God with all your heart, with all your soul, with all your strength, and with all your mind, and your neighbor as yourself.’ And He said to him, 'You have answered rightly; do this and you will live.'” Luke 10:25-28
“Not everyone who says to Me, ‘Lord, Lord,’ shall enter the kingdom of heaven, but he who does the will of My Father in heaven." Matthew 7:21
"He who has My commandments and keeps them, he it is who loves Me." John 14:21
There is a Heaven and a hell. People have free will in spiritual things and by their own choices made while living in this world choose for themselves their eternal dwelling place. God condemns no one to hell but a person by choosing to do what he or she believes to be wrong condemns himself.
"Then Jesus said to those who believed Him, 'If you abide in My word, you are truly My disciples. And you shall know the truth, and the truth shall make you free.... Most assuredly, I say to you, whoever commits sin is the slave of sin.'" John 8:31-34
Heaven is made up of all who have lived according to the teachings of their faith. People of all faiths may be saved provided they live according to what they believe to be right and resist doing what they know to be wrong. The Lord taught:
"And other sheep I have which are not of this fold; them also I must bring, and they will hear My voice; and there will be one flock and one shepherd." John 10:16
"In My Father’s house are many mansions; if it were not so, I would have told you." John 14:2