To apply translated captions to your video:
Click [Apply to sequence]
Choose [Premiere Pro captions] and [Split track for translation]
In the Premiere Pro timeline, activate the translated caption track
Premiere Pro only allows one caption track to be active at a time. Make sure to deactivate the original track if needed.
To apply both original and translated captions as animated captions:
Click [Apply to sequence]
Choose [Animated Captions]
Choose caption style to apply
For more details, check out this guide for Animated Captions
Select [Include] in [Translation]
Animated captions shows original and translated captions together