Currently I have a little over 5,700 credits and I have not played glitch in a very long time. I was wondering if there was a way in which I could give them away.
Hello! I'm pretty sure there's only one way to do it, and that would be giving away your whole account. Hopefully as Glitch grows we'll have ways to gift pre-bought credits!
According to the Terms of Service, you are not allowed to give away or sell your account. It was discussed in a previous thread, and here is a staff reply.
One way to get rid of those credits you don't want would be to use them to upgrade some furniture, and give it away or sell it to other players for currants.