Depends on your timeframe. On their website there is an overview of all their royalties & streams (https://www.metallaroyalty.com/royalty-list/ ). As you can see, many are still in development or exploration. These currently don't generate cashflow but will/should in the long run.
While gradually more royalties/streams will move from development/exploration to production, MTA's economics will improve and so should the share price. All the while they are still making deals to increase the amount of royalties/streams, increasing the long term potential further.
Short term price can go :2 or x2 or even more depending on how crazy people will act on increases/decreases in PM prices. Long term, in my opinion, the only way is up.
If gold keeps rising due to the actions of the Federal Reserve, the sky is the limit. The more gold goes up the more valuable the company is as they already have the royalties to that gold at a lower price. I have held MTA for a few years and haven't sold one share.