How many times/places in the Bible does Jesus promise that we will be with him. Such as John 5:24 or John 6:37
The answer to your question is — many times. Several examples where Jesus promises that we will be with him or that he will be with us, are listed below:
Mat 18:20 For where two or three are gathered in my name, there am I among them.”
Mat 25:34 Then the King will say to those on his right, ‘Come, you who are blessed by my Father, inherit the kingdom prepared for you from the foundation of the world.
Mat 28:20 teaching them to observe all that I have commanded you. And behold, I am with you always, to the end of the age.”
Joh 12:26 If anyone serves me, he must follow me; and where I am, there will my servant be also. If anyone serves me, the Father will honor him.
Joh 14:3 And if I go and prepare a place for you, I will come again and will take you to myself, that where I am you may be also.
Joh 14:18-23 “I will not leave you as orphans; I will come to you. (19) Yet a little while and the world will see me no more, but you will see me. Because I live, you also will live. (20) In that day you will know that I am in my Father, and you in me, and I in you. … (23) Jesus answered him, “If anyone loves me, he will keep my word, and my Father will love him, and we will come to him and make our home with him.
Joh 17:20-23 “I do not ask for these only, but also for those who will believe in me through their word, (21) that they may all be one, just as you, Father, are in me, and I in you, that they also may be in us, so that the world may believe that you have sent me. (22) The glory that you have given me I have given to them, that they may be one even as we are one, (23) I in them and you in me, that they may become perfectly one, so that the world may know that you sent me and loved them even as you loved me.
Joh 17:26 I made known to them your name, and I will continue to make it known, that the love with which you have loved me may be in them, and I in them.”
The following quote is written by Paul, but referring to Jesus:
2Ti 2:11-12 The saying is trustworthy, for: If we have died with him, we will also live with him; (12) if we endure, we will also reign with him; if we deny him, he also will deny us;
From the pen of the apostle John:
Rev 20:6 Blessed and holy is the one who shares in the first resurrection! Over such the second death has no power, but they will be priests of God and of Christ, and they will reign with him for a thousand years.