OOmis
1) The gemara says we are not experts on the exact letters in the Torah (nothing that affects meaning, just “chaseiros veyeseiros” )
2) To that end, the Gemara in several places makes derashas based on “extra” or “missing” vavs that we dont have
3) There are several differences between our sifrei Torah and Yemenite. most famously whether “dakah” has a heh or aleph
4) Dont let it shake your belief none of this has significant effect on any of the Torahs’ meaning so shouldnt affect your day to day living