Hi @abigoni and welcome to SimScale!
One option would be that you participate in the “SimScale Referral Program”. Other options would be to upgrade your account or ask @AnnaFless for additional core hours.
If you need a simulation result fast you can contact me anytime. I can run simulations for you in this case. That saves you some precious core hours
For your interest: What is the definition of a core hour?
Enjoy your stay here and feel free to ask if something is unclear!