Now… my website won't even pull up… Syntax error

I am a beginner when it comes to websites so I’ve been messing around with CSS. This became a problem when we had to update our themes so I installed a child theme. Basically what I did was copy all the files from the original theme and put them into another zip file that has the updated style.css first few lines to make it a child theme.

Now… my website won’t even pull up… It gives me this error:

Parse error: syntax error, unexpected ‘<‘ in /home/content/a/i/r/airs2976/html/callairsolutions/wp-content/themes/Aggregate/functions.php on line 47

I can’t login to my website through the wp-admin extension so I can’t fix what I did or take off the child theme… I have no idea what to do, please help.