Hi @Layla,
At >1000mIU/mL, your antibody level would be considered a high enough for protection, even in cases of unprotected sex. More resources and discussion can be found here: If Hepatitis B Is Sexually Transmitted, How Come My Partner Isn’t Infected? - Hepatitis B Foundation; Having children and Hepatitis B - #12 by john.tavis
Hope these help,
Thomas