This question is one of the most important questions in any religion that has God concept. In order to properly answer this question one needs to define two main terms "God" and "exist" precisely. Term "God" has at least 6 different meanings used in this website. Term "exist" sometimes could be interpreted as existing outside of the physical world, which is a problematic notion on its own.Last updated on 11/9/2020
There are a lot of problems with concept of God (see arguments against existence of god) and lack of evidence of existence of God. But despite all of this, some variant for God could exist. Given this situation safest and most neutral position is agnosticism - it's not known if God exists or not.