Hi, so I'm new to this site and I don't know how to handle this specific situation. Yesterday I did a Speedrun of Counter-Strike: Global Offensive Gun Range and it got verified. Today I did the same but with a better time. When this happens should I change my actual run or can I submit a new run and the old will automatically be deleted? As I am I just changed my old run before asking this question here^^

As FurryWulfz mentioned, create a new submission every time you get a better time. This way, you can see a nice progression on your profile in your game.

Thank you I'll do this in the future then. Should I also do this when I get a better time but the last one isn't verified?

It's up to you to choose that.

Ok thank you

It's fine to have multiple submissions in the queue for verification at one time. If you'd like both verified, even the one you've since obsoleted (so as to have a record of your PB history, many players myself included like having this), let the moderator know.