סְבָא Seba
Every verse in which this name stands — 4 places, in canonical order, first appearance to last. These are the occurrences our own corpus tags as this name, counting every form the text writes it in, which is the number on the list.
A son of Cush, and the country settled by him. The name stands four times in the Tanakh, first at Genesis 10:7 and last at 1 Chronicles 1:9.
וּבְנֵי כוּשׁ סְבָא וַֽחֲוִילָה וְסַבְתָּה וְרַעְמָה וְסַבְתְּכָא וּבְנֵי רַעְמָה שְׁבָא וּדְדָֽן
And the sons of Cush: Seba, and Havilah, and Sabtah, and Raamah, and Sabteca; and the sons of Raamah: Sheba, and Dedan.
כִּי אֲנִי יְהוָה אֱלֹהֶיךָ קְדוֹשׁ יִשְׂרָאֵל מוֹשִׁיעֶךָ נָתַתִּי כָפְרְךָ מִצְרַיִם כּוּשׁ וּסְבָא תַּחְתֶּֽיךָ
For I am the LORD thy God, The Holy One of Israel, thy Saviour; I have given Egypt as thy ransom, Ethiopia and Seba for thee.
מַלְכֵי תַרְשִׁישׁ וְאִיִּים מִנְחָה יָשִׁיבוּ מַלְכֵי שְׁבָא וּסְבָא אֶשְׁכָּר יַקְרִֽיבוּ
The kings of Tarshish and of the isles shall render tribute; the kings of Sheba and Seba shall offer gifts.
וּבְנֵי כוּשׁ סְבָא וַחֲוִילָה וְסַבְתָּא וְרַעְמָא וְסַבְתְּכָא וּבְנֵי רַעְמָא שְׁבָא וּדְדָֽן
And the sons of Cush: Seba, and Havilah, and Sabta, and Raama, and Sabteca. And the sons of Raama: Sheba, and Dedan.
Quick answers
What is the gematria of Seba?
Seba — סבא in Hebrew — has a gematria of 63 in the standard method.
How many times is Seba named in the Tanakh?
4 times, first at Genesis 10:7.
A spelling is not a name. The written word סבא stands 3 times in the corpus, which is a different question and often a different number: the same letters can spell another name or an ordinary word, and a name written with a particle attached is a word that search never returns. It is here, as itself.
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