No, the Insta360 X5 is not compatible with the Transcend 700S V90 64GB.
Insta360 X5 has a microSD-only card slot. Its own product page confirms only microSD card compatibility -- a full-size SD card is physically larger than a microSD card and does not fit this slot (the reverse of the more common microSD-via-adapter case: here there is no adapter that shrinks a full-size card down to fit).
What works instead
See all compatible camera for the Insta360 X5 →“UHS-I microSD cards with a V30 or above speed class and exFAT format”
Last verified:
Compatibility inferred from spec rule (citations above are manufacturer-verified)