To know if a religion is true and Heaven-bound, you must find out what role that religion gives to Jesus. For true religion is all about Jesus and He is Supreme Authority to people who know Him and love Him.
He is not a human, who worked His way up to be God. He is not a myth and was never an Angel. He is God's only Son, who took on flesh and came to Earth, to be born of a virgin woman, Mary, who went on to later have other children. Jesus was God, and Mary and Joseph were people, just like us.
God the Father, sent His only Son Jesus to be willingly sacrificed for the sins of the world. His sacrifice touches every person ever born. Everybody owes their freedom to choose life, to Jesus. Now He is waiting in Heaven, until the time is ready for Him to come back, to gather His people and take them to their home in Heaven. Surely, nobody wants to miss that.
You can learn all these things by reading the New Testament, which is easy to read and understand. Or someone may tell you about Jesus. However you hear about Him, Jesus wants you to seek to know Him better, and to ultimately turn yourself and your life over to Him. At that time "all things will become new" to you and you will see things with "new eyes". You will be a "new person," because now the Holy Spirit will reside within to guide and teach you even more.
Never accept any belief that discredits, downgrades or leaves out Jesus. It won't be real and it won't save you. You will only go around once on Earth, but you have the opportunity to keep going around forever and ever in Heaven. This is an adventure like no other and the best deal you will ever have, and now is the time to take it. Jesus is easy to love, for He loves you, has done so much for you, and is still helping you. I can't imagine why anyone would reject His love for them, but some people do. And that is their God-given prerogative, although a change in attitude can possible come at any time. It is not too late, yet.