EXHIBIT 32.1

CERTIFICATION OF PRINCIPAL EXECUTIVE OFFICER PURSUANT TO 18 U.S.C.

SECTION 1350 AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY

ACT OF 2002

In connection with the Form 10-Q/A of Apollo Strategic Growth Capital II (the “Company”) for the quarterly period ended September 30, 2021, as filed with the Securities and Exchange Commission (the “Report”), I, Sanjay Patel, Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. §1350, as added by §906 of the Sarbanes-Oxley Act of 2002, that:

1. The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

2. To my knowledge, the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company as of and for the period covered by the Report.

Dated: December 6, 2021

/s/ Sanjay Patel

Sanjay Patel

Chief Executive Officer and Director

* The foregoing certification is being furnished solely pursuant to 18 U.S.C. §1350 and is not being filed as part of the Report or as a separate disclosure document.