How can I get rewards before signing up for uphold?
Use gemini if you don’t want to use Uphold
What do you mean?
if you mean how can you get the rewards that you already earned before you sign up for Uphold, those rewards will be transferred to Uphold when the wallet is verified.
If you mean, what is an alternative way to get rewards while not yet signed up to Uphold, @Impoiler already answered. Currently the only alternative is Gemini.
In future Brave may be able to make agreements with other custodians.
If none of those are an option, keep accumulating in the browser until a better alternative is added.