If you have enough storage to upload it then no size limit exists. The storage can be checked by an Account Admin on the Usage page (/usage).
Please consider that a large file like 2 GB can take some time until it is uploaded and processed. It also depends on which and how many assets are being processed at that time.
If you are not able to upload it or if it is stuck on “processing” for a long time you can reach out to the Frontify Support Team.