Hi there!
Thanks for your query.
I have visited your site. You have added a top section already, named as header1 with two colums. One for the logo and the other for the contact information: https://prnt.sc/KK6H0FU-qX0j
If you want to accomodate more items there, you can publish modules with your desired content in that position, in this case 'top1'. You can create more colums there either, then assign another module position there and publish your desired module in that position to be appear.
You may need to adjust margin/padding values and alignment styles to get it visually smooth.
I think you already know, but here it is again:
https://www.joomshaper.com/documentation/helix-framework/helix3/layout-manager-settings
Hope this helps!
Best Regards