Follow the below steps to create a TXT record for Google Domain Verification for your domain name.
- Log into your Solid Control Panel account.

- Click on Hosting Space Menu.

- Click on Domains.
- Click on the Domain Name you want to create the record for.

- Click on Edit DNS Zone Records.

- Click on Add Record.

- Set the Record Type to TXT.
- Enter the Record Name. (provided by Google)
- Enter the Record Data. (provided by Google)

- Click on Save.
When Google has found this new DNS record, they will mark you as the verified owner of the domain.
Note: DNS changes may take between 1 and 24 hours to propagate. If Google does not find the record immediately they will check periodically for it.