"...I love you so much!"
!אֲנִי אוֹהֶבֶת אוֹתְךָ כָּל כָּךְ
Here, in English we say not just "so" but "so much" - which makes no difference in terms of Hebrew!
However...
If I want to say "I have so manyquestions!" In this case we say in Hebrew
.יֵשׁ לִי כָּל כָּךְ הַרְבֵּה שְׁאֵלוֹת
More examples:
יֵשׁ לִי כָּל כָּךְ הַרְבֵּה דְּבָרִים לַסֵּפֶר לְךָ
(I have so many things to tell you)
רָאִיתִי אֶת הַסֶּרֶט הָזָה כָּל כָּךְ הַרְבֵּה פְּעָמִים, שֶׁאֲנִי זוֹכֵר כָּל מִלָּה!
(I've seen this movie so many times, that I remember every word (of it)"