You will see a blue question mark in the top right section of your HighLevel dashboard. Click it and then select the "live chat" option to begin a new Support request.
If you have general questions about HighLevel and implementing different parts of the software, you can hop into their Daily Q&A and Open Office Hours with their Customer Success team! It's first-come-first-serve at https://speakwith.us/success (7 am - 5 pm M-F CST, 9 am - 5 pm Saturdays)