While our plans (or any non-allowance purchased credits) will provide you a set number of credits (such as 625 for Standard or 2250 for Pro), you will rarely see your credits displayed as this initial value. Rather, each of our generative tools shows a counter in the top right corner that automatically converts your total credit value into that tool's metric (seconds, images, etc.)
You can mouse over the (i) next to the conversion counter to view the tool's conversion rate, and see your total credits:
Thus, if you're on a specific tool (e.g. Gen-1 or Gen-2) and are worried that you did not receive your full credits because you're only seeing a value like "200s", that's because 1 second of Gen-2 footage costs 5 credits to generate, not because you didn't receive your credits.
For more information on credits and exact conversion rates, please refer to this article: How do credits work?