Yes, that’s possible. However, we handle individuals a bit differently.
In your account, when asked to enter company name, simply enter your own name instead. As for VAT, EU members are only required to enter a VAT number if they currently have one. If you are an EU member, you don't need to apply for a VAT number to use Unity Ads. If you do not have a VAT number, simply enter "none" in the field when prompted.