courses in programming/excell certificates

Hi, I’m currently a student going into yr12 and i’ve been wanting to develop my skills early and create my linkedin account; i know it’s a little early to do that but i want to expand my skillset and expand my corporate profile.
Where is the best place to take courses in things such as Python, Excel and SQL which offer certificates too

I wouldn't say there are the best places to get courses, but I know the most credible certificates for the IT industry:
Excel: https://learn.microsoft.com/en-us/credentials/certifications/microsoft-office-specialist-expert-2019/ (there might be an up to date version post 2019 from the time of writing, so always check the Microsoft website)
Python: https://pythoninstitute.org/certification-tracks
SQL: https://education.oracle.com/mysql-80-database-developer/pexam_1Z0-909 (this will be difficult)
Microsoft provides a list of accredited instructors who meet their requirements for the qualification.
Python material is taught through the institute.
Oracle provide their material, but I recommend finding a course that would provide further information and support.
From the look of things, shall I presume you are trying to get into data science roles after college/uni?

thank you, and yes